Pleurobranchidae
Every nudibranch on Fin, recorded across our dive sites.
Pleurobranchidae spp.
Jorunna spp.
Aegires punctilucens
Pteraeolidia spp.
Phyllidia varicosa
Chromodoris spp.
Melibe spp.
Cratena peregrina
Flabellina affinis
Nembrotha spp.
Phyllidia elegans
Peltodoris atromaculata
Edmundsella pedata
Roboastra spp.
Phyllidia picta
Felimare picta
Felimare tricolor
Phidiana spp.
Notodoris gardineri
Melibe viridis
Chromodoris annae
Luisella babai
Notodoris citrina
Neptunazurea kempfi
Polycera quadrilineata
Phyllidia ocellata
Nembrotha kubaryana
Flabellina ischitana
Phyllidia coelestis
Diaphorodoris papillata
Doriprismatica atromarginata
Antiopella cristata
Jorunna funebris
Chromodoris willani
Phyllidiella pustulosa
Felimare fontandraui
Chromodoris lochi
Chromodoris magnifica
Rudmania krohni
Goniobranchus geometricus
Onchidoris bilamellata
Ceratosoma amoenum
Diaphorodoris alba
Hypselodoris tryoni
Jorunna tomentosa
Rudmania purpurea
Limacia clavigera
Coryphellina exoptata
Flabellina cavolini
Felimare villafranca
Felimare cantabrica
Felimare orsinii
Goniobranchus kuniei
Tambja morosa
Nembrotha cristata
Doris montereyensis
Phyllodesmium briareum
Nemesignis banyulensis
Facelina bostoniensis
Chromodoris quadricolor
Hypselodoris bullockii
Caloria indica
Doriopsilla areolata
Nembrotha lineolata
Caloria elegans
Nembrotha milleri
Archidoris pseudoargus
Halgerda batangas
Felimida binza
Nembrotha chamberlaini
Facelina auriculata
Trinchesia morrowae
Crimora papillata
Goniobranchus coi
Facelina rubrovittata
Felimare bilineata
Pelagella castanea
Diaulula sandiegensis
Felimida luteorosea
Doris verrucosa
Acanthodoris pilosa
Flabellinopsis iodinea
Peltodoris nobilis
Caloria quatrefagesi
Geitodoris planata
Diaulula odonoghuei
Hermissenda crassicornis
Thecacera picta
Hypselodoris pulchella
Chromodoris alcalai
Coryphella gracilis
Thecacera pennigera
Dendronotus frondosus
Polycera kernowensis
Phyllidia flava
Hypselodoris apolegma
Acanthodoris nanaimoensis
Pleurobranchus forskalii
Hermissenda opalescens
Coryphella verrucosa
Phestilla sibogae
Candiella odhneri
Goniodoridella picoensis
Rostanga pulchra
Goniobranchus splendidus
Dendrodoris krusensternii
Aeolidia filomenae
Tergipes tergipes
Glossodoris rufomarginata
Aeolidia papillosa
Dirona albolineata
Goniobranchus fidelis
Ardeadoris egretta
Ceratosoma tenue
Spurilla neapolitana
Ceratosoma brevicaudatum
Hypselodoris bennetti
Felimare californiensis
Orienthella trilineata
Phyllidiopsis shireenae
Diaphorodoris luteocincta
Trapania tartanella
Amphorina linensis
Catriona aurantia
Goniobranchus leopardus
Okenia nodosa
Doris berghi
Samla bicolor
Trapania lineata
Felimare ruthae
Fiocuthona concinna
Phyllidia alyta
Doto coronata
Berthella plumula
Reticulidia fungia
Chromodoris strigata
Trinchesia caerulea
Onchidoris muricata
Chromodoris colemani
Glaucus atlanticus
Halgerda wasinensis
Coryphella lineata
Favorinus branchialis
Polycera atra
Janolus hyalinus
Hypselodoris imperialis
Notodoris minor
Berthellina edwardsii
Phyllidiella zeylanica
Dendronotus venustus
Favorinus tsuruganus
Aphelodoris varia
Triopha catalinae
Jorunna rubescens
Antiopella fusca
Limenandra nodosa
Goniobranchus hintuanensis
Triopha maculata
Aegires albopunctatus
Thorunna furtiva
Ceratosoma gracillimum
Polycera capensis
Phyllidia marindica
Berghia coerulescens
Melibe leonina
Hypselodoris roo
Platydoris argo
Aeolidiella glauca
Cadlina laevis
Hypselodoris zephyra
Reticulidia halgerda
Doriopsilla fulva
Hypselodoris nigrostriata
Learchis poica
Pleurobranchus areolatus
Candiella manicata
Limacia cockerelli
Goniobranchus annulatus
Hypselodoris decorata
Mexichromis trilineata
Ceratodoris rosacea
Felimida macfarlandi
Doto fragilis
Triopha modesta
Chromodoris westraliensis
Tomoberthella martensi
Tenellia ocellata
Phyllidiopsis xishaensis
Dendrodoris krebsii
Bornella anguilla
Neptunazurea porterae
Cadlina pellucida
Hypselodoris obscura
Roboastra gracilis
Doris chrysoderma
Taringa telopia
Goniobranchus verrieri
Dendronotus iris
Doriopsilla albopunctata
Tritonia hombergii
Halgerda indotessellata
Felimare agassizii
Goniobranchus collingwoodi
Chromolaichma sedna
Hypselodoris krakatoa
Spurilla braziliana
Glossodoris acosti
Austraeolis ornata
Ceratosoma trilobatum
Tritonicula hamnerorum
Coryphellina flamma
Cadlinella ornatissima
Longibranchus putnami
Facelinopsis marioni
Eubranchulus rupium
Phyllidiella nigra
Phyllidia exquisita
Pleurobranchus peronii
Phyllidiella rosans
Asteronotus cespitosus
Phyllidiopsis annae
Chromodoris elisabethina
Bulbaeolidia alba
Aegires villosus
Halgerda willeyi
Dondice occidentalis
Babakina anadoni
Miamira sinuata
Facelina annulicornis
Bonisa nakaza
Tambja verconis
Mexichromis multituberculata
Candiella lineata
Plocamopherus imperialis
Hypselodoris variobranchia
Ancula gibbosa
Hypselodoris whitei
Hypselodoris maculosa
Flabellina gabinierei
Acanthodoris hudsoni
Gargamella rosi
Tayuva lilacina
Chromolaichma hemera
Limacia mcdonaldi
Goniobranchus setoensis
Dendrodoris nigra
Phidiana hiltoni
Hypselodoris emma
Doriopsilla pelseneeri
Amphorina farrani
Phyllodesmium poindimiei
Rostanga rubra
Chromodoris kuiteri
Felimida clenchi
Trinchesia cuanensis
Cratena capensis
Phyllidia undula
Nembrotha purpureolineata
Phyllidiopsis krempfi
Edmundsella dushia
Phyllodesmium horridum
Doto pinnatifida
Candiella striata
Pleurobranchus grandis
Phestilla melanobrachia
Hypselodoris capensis
Hypselodoris infucata
Halgerda terramtuentis
Discodoris boholiensis
Chromodoris joshi
Goniobranchus daphne
Boreoberthella chacei
Goniobranchus albonares
Goniobranchus vibratus
Aegires leuckartii
Gymnodoris ceylonica
Thecacera pikachu
Cratena lineata
Hypselodoris jacksoni
Okenia amoenula
Halgerda tessellata
Geitodoris heathi
Notodoris serenae
Spurilla sargassicola
Verconia haliclona
Aphelodoris luctuosa
Lecithophorus capensis
Cadlina luteomarginata
Dendrodoris arborescens
Glossodoris angasi
Hypselodoris peasei
Berthella ocellata
Aeolidiella alderi
Nudibranchus exiguus
Chromodoris hamiltoni
Thorunna daniellae
Antiopella capensis
Melibe colemani
Carminodoris nodulosa
Doto ussi
Phyllidia polkadotsa
Goniobranchus heatherae
Doriprismatica balut
Gymnodoris inornata
Tambja capensis
Antiopella longidentata
Polycera hedgpethi
Dendrodoris limbata
Amphorina viriola
Coryphella piunca
Phyllodesmium jakobsenae
Gymnodoris impudica
Hypselodoris paradisa
Tritonia festiva
Palio dubia
Coryphellina marcusorum
Caloria militaris
Glossodoris pallida
Coryphella capensis
Tyrannodoris luteolineata
Ceratophyllidia papilligera
Verconia simplex
Miamira moloch
Thecacera pacifica
Tenellia miniostriata
Phyllodesmium koehleri
Dermatobranchus ornatus
Ardeadoris angustolutea
Doto cervicenigra
Doris fontainii
Thorunna kahuna
Polycera faeroensis
Bermudella brunneomaculata
Nanuca sebastiani
Coryphella chriskaugei
Doriopsilla carneola
Unidentia sandramillenae
Tritoniopsis frydis
Hypselodoris festiva
Favorinus mirabilis
Marionia blainvillea
Coryphellina poenicia
Okenia elegans
Tularia bractea
Nembrotha lorosae
Diaulula punctuolata
Phyllidia rueppelii
Goniobranchus tasmaniensis
Limacia jellyi
Aeolidia loui
Phyllodesmium serratum
Jason mirabilis
Glossodoris bonwanga
Doto floridicola
Flabellina funeka
Chromodoris kalawakan
Mexichromis mariei
Aphelodoris antillensis
Baeolidia moebii
Nanuca leali
Coryphella longicaudata
Rostanga arbutus
Doris cameroni
Chromodoris africana
Doto pita
Diversidoris crocea
Austraeolis catina
Learchis evelinae
Mexichromis macropus
Phyllodesmium opalescens
Limacia lucida
Miamira miamirana
Polycera norvegica
Doriopsilla gemela
Phyllodesmium rudmani
Ardeadoris tomsmithi
Antiopella barbarensis
Goniobranchus thompsoni
Gymnodoris crocea
Goniobranchus geminus
Ardeadoris rubroannulata
Goniobranchus epicurius
Phyllodesmium longicirrum
Chromodoris orientalis
Verconia verconis
Goniobranchus sinensis
Cadlina sylviaearleae
Platydoris angustipes
Halgerda carlsoni
Goniobranchus albopustulosus
Tambja mullineri
Samla bilas
Chromodoris dianae
Hypselodoris katherinae
Luisella engeli
Cadlina flavomaculata
Hypselodoris violacea
Dirona picta
Goniobranchus preciosus
Bornella calcarata
Dondice freddiemercuryi
Doto greenamyeri
Goniobranchus woodwardae
Tenellia puti
Pleurobranchus hilli
Aldisa sanguinea
Phyllodesmium macphersonae
Hypselodoris saintvincentius
Eubranchus rustyus
Tritonicula wellsi
Doto amyra
Doris wellingtonensis
Phyllodesmium crypticum
Kaloplocamus ramosus
Tambja olivaria
Ceratosoma ingozi
Dendronotus albus
Hypselodoris regina
Carminodoris estrelyado
Berthellina delicata
Trapania brunnea
Hiatodoris fellowsi
Dirona pellucida
Pleurobranchus weberi
Tambja tenuilineata
Godiva quadricolor
Doriprismatica stellata
Dicata odhneri
Dendrodoris caesia
Pruvotfolia rhodopos
Polycera tricolor
Hypselodoris purpureomaculosa
Limacia inesae
Miamira flavicostata
Cuthona tina
Doris odhneri
Dendrodoris grandiflora
Coryphella trophina
Adalaria proxima
Glossodoris hikuerensis
Bulbaeolidia oasis
Anteaeolidiella oliviae
Cuthona divae
Rostanga crawfordi
Notobryon wardi
Phyllodesmium magnum
Pleurobranchus albiguttatus
Armina scotti
Tambja gabrielae
Doto furva
Ceratodoris mellita
Phyllodesmium colemani
Phyllidiella rudmani
Baenopsis baetica
Diaphorodoris lirulatocauda
Dendrodoris elongata
Doto urak
Goniobranchus aureomarginatus
Leminda millecra
Armina californica
Goniobranchus conchyliatus
Dendrodoris citrina
Anteaeolidiella chromosoma
Austraeolis stearnsi
Favorinus vitreus
Goniobranchus fabulus
Cerberilla potiguara
Glossodoris buko
Dermatobranchus caeruleomaculatus
Gymnodoris striata
Produnga rubropunctata
Idaliadoris depressa
Palisa papillata
Taringa halgerda
Babakina festiva
Apata pricei
Thorunna florens
Noumeaella rehderi
Tenellia thelmae
Atagema intecta
Hypselodoris maritima
Plocamopherus maderae
Armina occulta
Marioniopsis viridescens
Acanthodoris rhodoceras
Chromodoris celinae
Marioniopsis arborescens
Martadoris limaciformis
Kaloplocamus acutus
Dendronotus subramosus
Sclerodoris tuberculata
Cadlina limbaughorum
Phyllodesmium hyalinum
Nembrotha aurea
Janolus mokohinau
Pleurolidia juliae
Thordisa bimaculata
Trapania benni
Cabangus regius
Phyllidia willani
Trapania euryeia
Goniobranchus hunterae
Alloiodoris lanuginata
Tenellia albocrusta
Hypselodoris skyleri
Idaliadoris neapolitana
Goniobranchus loringi
Ardeadoris averni
Murphydoris adusta
Jorunna pantherina
Janolus eximius
Eubranchus ocellatus
Hypselodoris iba
Tenellia nakapila
Corambe steinbergae
Doto kya
Ceratodoris atkinsonorum
Coryphella cooperi
Corambe pacifica
Trapania palmula
Atagema spongiosa
Tenellia bughaw
Bermudella angelensis
Verconia romeri
Thecacera melkyi
Goniobranchus decorus
Platydoris sanguinea
Nembrotha mullineri
Miamira alleni
Nembrotha livingstonei
Acanthodoris lutea
Hypselodoris confetti
Sakuraeolis nungunoides
Baptodoris mimetica
Pauleo jubatus
Thorunna halourga
Trapania vitta
Hallaxa chani
Hypselodoris bertschi
Tenellia speciosa
Janolus savinkini
Cratena simba
Sebadoris fragilis
Baeolidia australis
Phyllidiopsis sinaiensis
Plocamopherus ceylonicus
Asteronotus mimeticus
Cadlina modesta
Tenellia kuiterorum
Anteaeolidiella cacaotica
Ardeadoris scottjohnsoni
Samla riwo
Eubranchopsis virginalis
Limenandra confusa
Favorinus japonicus
Diversidoris sulphurea
Berthellina citrina
Amanda armata
Chromodoris aspersa
Mexichromis pusilla
Tritoniopsis elegans
Melibe coralophilia
Cadlina sparsa
Noumeaella rubrofasciata
Dendrodoris fumata
Pelagella longicornis
Doto columbiana
Diversidoris flava
Coryphellina lotos
Phyllodesmium tuberculatum
Phyllodesmium iriomotense
Dermatobranchus funiculus
Jorunna parva
Janolus incrustans
Goniodoridella savignyi
Hypselodoris violabranchia
Trapania toddi
Phyllidiopsis cardinalis
Ancula pacifica
Trapania miltabrancha
Dendrodoris guttata
Doriopsis pecten
Hypselodoris bollandi
Lomanotus vermiformis
Trapania tora
Doriopsilla rowena
Bermudella mija
Trapania kamagong
Phestilla lugubris
Thorunna australis
Rostanga lutescens
Phyllodesmium parangatum
Facelina bourailli
Fiona pinnata
Janolus flavoanulatus
Hypselodoris lacuna
Trapania tamaraw
Coryphellina delicata
Tritonia exsulans
Trapania scurra
Verconia norba
Every member ranked by how many dive sites hold them, with the traits a diver cares about.
| Species | Diver appeal | Findability | Size | Depth | Sites | Status |
|---|---|---|---|---|---|---|
| Sea SlugPleurobranchidae spp. |
| Easy to miss |
| – |
| – |
| 5,729 |
| Least concern |
 Jorunna NudibranchJorunna spp. | Easy to miss | – | – | 3,383 | Least concern |
 NudibranchAegires punctilucens | – | – | – | 3,168 | Least concern |
| Blue DragonPteraeolidia spp. | Easy to miss | – | – | 3,163 | Least concern |
| Varicose Wart SlugPhyllidia varicosa | Easy to miss | 4cm | 10-20m | 3,145 | Least concern |
 Chromodoris NudibranchChromodoris spp. | Easy to miss | – | – | 2,203 | Least concern |
| MelibeMelibe spp. | – | – | – | 2,073 | Least concern |
| Cratena SlugCratena peregrina | Easy to miss | – | – | 1,763 | Least concern |
| Mediterranean Violet AeolidFlabellina affinis | Easy to miss | – | – | 1,668 | Least concern |
 Nembrotha NudibranchNembrotha spp. | Easy to miss | – | – | 1,597 | Least concern |
| Elegant PhyllidiaPhyllidia elegans | – | 3cm | – | 1,509 | Least concern |
| Cow SnailPeltodoris atromaculata | Easy to miss | – | – | 1,383 | Least concern |
 Violet Sea SlugEdmundsella pedata | – | – | – | 1,269 | Least concern |
| Roboastra NudibranchRoboastra spp. | Easy to miss | – | – | 1,267 | Least concern |
| Painted PhyllidiaPhyllidia picta | – | – | – | 1,259 | Least concern |
| Giant DorisFelimare picta | Easy to miss | – | – | 1,125 | Least concern |
| Tricolor DorisFelimare tricolor | Easy to miss | – | – | 1,114 | Least concern |
| Phidiana NudibranchPhidiana spp. | – | – | – | 1,056 | Least concern |
| Gardiner's NudibranchNotodoris gardineri | – | 5cm | – | 1,005 | Least concern |
| Giant MonkdragonMelibe viridis | Easy to miss | – | – | 904 | Least concern |
 Anna's ChromodorisChromodoris annae | – | 1cm | 15-30m | 854 | Least concern |
 Luisella BabaiLuisella babai | – | – | – | 748 | Least concern |
| Citrus NudibranchNotodoris citrina | – | 4cm | – | 726 | Least concern |
| Neptunazurea kempfiNeptunazurea kempfi | Easy to miss | – | – | 721 | Least concern |
 Fourline NudibranchPolycera quadrilineata | – | – | – | 676 | Least concern |
| Ocellated Wart SlugPhyllidia ocellata | Usually seen | – | – | 629 | Least concern |
| Trance Wrinkle DoridNembrotha kubaryana | Easy to miss | – | – | 625 | Least concern |
 Flabellina IschitanaFlabellina ischitana | – | – | – | 603 | Least concern |
| Heavenly Wart SlugPhyllidia coelestis | Easy to miss | – | – | 579 | Least concern |
 Diaphorodoris papillataDiaphorodoris papillata | – | – | – | 574 | Least concern |
| Black-margined NudibranchDoriprismatica atromarginata | Easy to miss | – | – | 569 | Least concern |
 Antiopella CristataAntiopella cristata | – | – | – | 547 | Least concern |
 Ringed Velvet DoridJorunna funebris | – | 3cm | – | 500 | Least concern |
 Willan's ChromodorisChromodoris willani | – | 1cm | – | 494 | Least concern |
| Pustular PhyllidiaPhyllidiella pustulosa | Usually seen | – | – | 493 | Least concern |
| Felimare fontandrauiFelimare fontandraui | Easy to miss | – | – | 491 | Least concern |
 Loch's ChromodorisChromodoris lochi | – | 2cm | – | 481 | Least concern |
 Magnificent ChromodorisChromodoris magnifica | – | – | – | 453 | Least concern |
 Rudmania KrohniRudmania krohni | – | – | – | 452 | Least concern |
| Geometric Rainbow DoridGoniobranchus geometricus | Easy to miss | – | – | 438 | Least concern |
| Barnacle-eating DoridOnchidoris bilamellata | Hard to spot | 2cm | 0-55m | 429 | Least concern |
| Clown DorisCeratosoma amoenum | Easy to miss | – | – | 427 | Least concern |
 Diaphorodoris AlbaDiaphorodoris alba | – | – | – | 427 | Least concern |
| Tryon's HypselodorisHypselodoris tryoni | Easy to miss | – | – | 417 | Least concern |
| Grey Sea SlugJorunna tomentosa | Easy to miss | – | – | 368 | Least concern |
 Rudmania PurpureaRudmania purpurea | – | – | – | 367 | Least concern |
| Orange-clubbed NudibranchLimacia clavigera | Easy to miss | – | – | 366 | Least concern |
| Desirable FlabellinaCoryphellina exoptata | Easy to miss | – | – | 357 | Least concern |
 Flabellina CavoliniFlabellina cavolini | – | – | – | 353 | Least concern |
| Felimare villafrancaFelimare villafranca | Easy to miss | – | – | 342 | Least concern |
 Felimare CantabricaFelimare cantabrica | – | – | – | 341 | Least concern |
| Felimare orsiniiFelimare orsinii | Easy to miss | – | – | 338 | Least concern |
| Goniobranchus kunieiGoniobranchus kuniei | Easy to miss | – | – | 321 | Least concern |
| Blue-spotted Wrinkle DoridTambja morosa | Easy to miss | – | – | 317 | Least concern |
 Crested NembrothaNembrotha cristata | – | 8cm | – | 311 | Least concern |
| Monterey DoridDoris montereyensis | Easy to miss | 10cm | 0-28m | 308 | Least concern |
 Bushy PhyllodesmiumPhyllodesmium briareum | – | 1cm | 8-20m | 307 | Least concern |
 Nemesignis banyulensisNemesignis banyulensis | – | – | – | 306 | Least concern |
 Boston FacelinaFacelina bostoniensis | – | 2cm | 2-37m | 304 | Least concern |
 Striped Pyjama NudibranchChromodoris quadricolor | – | 2cm | – | 303 | Least concern |
| Lavender Split-tooth DoridHypselodoris bullockii | Easy to miss | – | – | 295 | Least concern |
| Sunrise Tentacle AeolidCaloria indica | Easy to miss | – | – | 291 | Least concern |
 Doriopsilla AreolataDoriopsilla areolata | – | – | – | 286 | Least concern |
 Lined NembrothaNembrotha lineolata | – | 2cm | – | 280 | Least concern |
 Pepper-and-salt SlugCaloria elegans | – | – | – | 270 | Least concern |
 Miller's NembrothaNembrotha milleri | – | – | – | 262 | Least concern |
 Sea LemonArchidoris pseudoargus | – | – | – | 261 | Least concern |
| Batangas HalgerdaHalgerda batangas | Easy to miss | – | – | 258 | Least concern |
| Harlequin Sea GoddessFelimida binza | Easy to miss | – | – | 250 | Least concern |
 Chamberlain's NembrothaNembrotha chamberlaini | – | 4cm | – | 250 | Least concern |
 Slender FacelinaFacelina auriculata | – | – | – | 248 | Least concern |
 Trinchesia morrowaeTrinchesia morrowae | – | – | – | 248 | Least concern |
 Crimora papillataCrimora papillata | – | – | – | 245 | Least concern |
| Coi's GoniobranchusGoniobranchus coi | Easy to miss | – | – | 241 | Least concern |
 Facelina RubrovittataFacelina rubrovittata | – | – | – | 233 | Least concern |
| Double-lined Sea SlugFelimare bilineata | Easy to miss | – | – | 230 | Least concern |
 Chestnut Pump DoridPelagella castanea | – | – | – | 229 | Least concern |
| San Diego DoridDiaulula sandiegensis | Easy to miss | 5cm | 0-28m | 228 | Least concern |
 Yellow-dotted DorisFelimida luteorosea | – | – | – | 227 | Least concern |
 Warty DoridDoris verrucosa | – | 4cm | 0-12m | 223 | Least concern |
 Hairy Spiny DorisAcanthodoris pilosa | – | 1cm | 0-55m | 220 | Least concern |
 Spanish ShawlFlabellinopsis iodinea | Easy to miss | – | – | 220 | Least concern |
 Noble DoridPeltodoris nobilis | Easy to miss | – | – | 219 | Least concern |
 Caloria QuatrefagesiCaloria quatrefagesi | – | – | – | 218 | Least concern |
 Geitodoris PlanataGeitodoris planata | – | 2cm | 91-267m | 211 | Least concern |
| Northern Leopard DoridDiaulula odonoghuei | Easy to miss | – | – | 210 | Least concern |
| HermissendaHermissenda crassicornis | Easy to miss | – | – | 208 | Least concern |
| Thecacera pictaThecacera picta | Easy to miss | – | – | 208 | Least concern |
| Dottyback Split-tooth DoridHypselodoris pulchella | Easy to miss | – | – | 205 | Least concern |
 Chromodoris AlcalaiChromodoris alcalai | – | – | 2-77m | 204 | Least concern |
 Coryphella GracilisCoryphella gracilis | – | – | – | 198 | Least concern |
| ThecaceraThecacera pennigera | Easy to miss | – | – | 198 | Least concern |
 Bushy-backed NudibranchDendronotus frondosus | – | 2cm | – | 197 | Least concern |
 Polycera kernowensisPolycera kernowensis | – | – | – | 192 | Least concern |
| White-spotted Yellow NudibranchPhyllidia flava | Easy to miss | – | – | 192 | Least concern |
| Cinderella Sea SlugHypselodoris apolegma | Easy to miss | – | – | 190 | Least concern |
| Nanaimo DoridAcanthodoris nanaimoensis | Hard to spot | 1cm | – | 188 | Least concern |
 Forskal's Sidegilled SlugPleurobranchus forskalii | – | – | – | 187 | Least concern |
| Opalescent NudibranchHermissenda opalescens | – | – | – | 187 | Least concern |
 Coryphella VerrucosaCoryphella verrucosa | – | – | – | 182 | Least concern |
 Phestilla SibogaePhestilla sibogae | – | – | – | 179 | Least concern |
 Candiella OdhneriCandiella odhneri | – | – | – | 179 | Least concern |
 Goniodoridella picoensisGoniodoridella picoensis | – | – | – | 179 | Least concern |
| Red Sponge DoridRostanga pulchra | Hard to spot | 0cm | 102m | 178 | Least concern |
| Splendid GoniobranchGoniobranchus splendidus | Easy to miss | – | – | 170 | Least concern |
 Dendrodoris GunnamattaDendrodoris krusensternii | – | – | – | 170 | Least concern |
 Aeolidia FilomenaeAeolidia filomenae | – | – | – | 168 | Least concern |
 Johnston's Balloon EolisTergipes tergipes | – | – | – | 167 | Least concern |
| Caramel NudibranchGlossodoris rufomarginata | Easy to miss | – | – | 167 | Least concern |
 Shag-rug AeolisAeolidia papillosa | – | 7cm | 0-380m | 166 | Least concern |
| White-lined DironaDirona albolineata | Easy to miss | 12cm | 0-28m | 166 | Least concern |
| Fiesta Rainbow DoridGoniobranchus fidelis | Easy to miss | – | – | 164 | Least concern |
 Heron ArdeadorisArdeadoris egretta | – | 7cm | 1-1014m | 163 | Least concern |
| Elongate Pantechnicon DoridCeratosoma tenue | Easy to miss | – | – | 162 | Least concern |
 Naples SpurillaSpurilla neapolitana | – | 4cm | 0-3m | 162 | Least concern |
| Short-tailed CeratosomaCeratosoma brevicaudatum | Easy to miss | – | – | 160 | Least concern |
| Bennett's HypselodorisHypselodoris bennetti | Easy to miss | – | – | 160 | Least concern |
 Felimare californiensisFelimare californiensis | – | – | – | 159 | Least concern |
 Three-lined AeolidOrienthella trilineata | Hard to spot | – | – | 156 | Least concern |
 Shireen's PhyllidiopsisPhyllidiopsis shireenae | – | 7cm | – | 153 | Least concern |
 Fried Egg NudibranchDiaphorodoris luteocincta | – | – | – | 150 | Least concern |
 Trapania tartanellaTrapania tartanella | – | – | – | 149 | Least concern |
 Amphorina LinensisAmphorina linensis | – | – | – | 148 | Least concern |
 Corange-tip CuthonaCatriona aurantia | – | – | – | 148 | Least concern |
| Leopard ChromodorisGoniobranchus leopardus | Easy to miss | – | – | 145 | Least concern |
 Okenia nodosaOkenia nodosa | – | – | – | 144 | Least concern |
 Doris BerghiDoris berghi | – | – | – | 143 | Least concern |
 Two-tone BluntnoseSamla bicolor | – | – | – | 141 | Least concern |
 Stripete TritoniaTrapania lineata | – | – | – | 136 | Least concern |
| Gold Line Sea GoddessFelimare ruthae | Easy to miss | – | – | 134 | Least concern |
 Fiocuthona ConcinnaFiocuthona concinna | – | – | – | 134 | Least concern |
 Four-lined Wart SlugPhyllidia alyta | – | – | – | 133 | Least concern |
 Coronate DotoDoto coronata | – | 1cm | – | 133 | Least concern |
 Yellow-plumed Sea SlugBerthella plumula | – | – | – | 128 | Least concern |
| Mushroom Coral ReticulidaReticulidia fungia | Easy to miss | – | – | 123 | Least concern |
 Streaked ChromodorisChromodoris strigata | – | – | – | 122 | Least concern |
 Trinchesia CaeruleaTrinchesia caerulea | – | – | – | 122 | Least concern |
 Rough DorisOnchidoris muricata | – | 0cm | 0-64m | 120 | Least concern |
 Coleman's ChromodorisChromodoris colemani | – | 1cm | 3-11m | 116 | Least concern |
| Atlantic Sea SwallowGlaucus atlanticus | Easy to miss | – | – | 116 | Least concern |
 Chocolate Waffle DoridHalgerda wasinensis | – | – | – | 116 | Least concern |
 Coryphella LineataCoryphella lineata | – | – | – | 115 | Least concern |
 Favorinus branchialisFavorinus branchialis | – | – | 5-20m | 115 | Least concern |
| Sorcerer's DoridPolycera atra | Hard to spot | 1cm | – | 115 | Least concern |
 Janolus HyalinusJanolus hyalinus | – | – | – | 114 | Least concern |
| Imperial NudibranchHypselodoris imperialis | Easy to miss | – | – | 114 | Least concern |
| Banana NudibranchNotodoris minor | Easy to miss | – | – | 112 | Least concern |
 Peach SeaslugBerthellina edwardsii | – | – | – | 110 | Least concern |
 Angular Wart SlugPhyllidiella zeylanica | – | 4cm | – | 104 | Least concern |
 Branched DendronotidDendronotus venustus | Hard to spot | – | – | 103 | Least concern |
 Black-horned Egg-eaterFavorinus tsuruganus | – | – | – | 103 | Least concern |
 Variable AphelodorisAphelodoris varia | – | 3cm | 0-20m | 102 | Least concern |
| Clown DoridTriopha catalinae | Easy to miss | 4cm | 0-17m | 102 | Least concern |
 Turret Velvet DoridJorunna rubescens | – | 11cm | 0-18m | 101 | Least concern |
 Antiopella FuscaAntiopella fusca | – | – | – | 101 | Least concern |
 Nodulous AeolidLimenandra nodosa | – | 3cm | – | 101 | Least concern |
 Bus Stop NudibranchGoniobranchus hintuanensis | – | 0cm | – | 101 | Least concern |
| Spotted TriophaTriopha maculata | – | 12cm | – | 100 | Least concern |
| Salt-and-pepper DoridAegires albopunctatus | Hard to spot | 1cm | – | 100 | Least concern |
 NudibranchThorunna furtiva | – | – | – | 98 | Least concern |
| Slender Ceratosoma NudibranchCeratosoma gracillimum | Easy to miss | – | – | 98 | Least concern |
 Crowned NudibranchPolycera capensis | – | 4cm | 0-30m | 97 | Least concern |
 Yellow-spined Wart SlugPhyllidia marindica | – | – | – | 97 | Least concern |
 NudibranchBerghia coerulescens | – | 2cm | 1m | 96 | Least concern |
| Lion NudibranchMelibe leonina | Easy to miss | – | – | 95 | Least concern |
| Hypselodoris rooHypselodoris roo | Easy to miss | – | – | 95 | Least concern |
 Redbrown Leathery DorisPlatydoris argo | – | – | – | 94 | Least concern |
 Orange-brown AeolidAeolidiella glauca | – | – | – | 94 | Least concern |
 White Atlantic CadlinaCadlina laevis | – | 2cm | 0-800m | 94 | Least concern |
| Zephyr HypselodorisHypselodoris zephyra | Easy to miss | – | – | 94 | Least concern |
| Chocolate Mango NudibranchReticulidia halgerda | Easy to miss | – | – | 93 | Least concern |
 White-speckled DoridDoriopsilla fulva | Easy to miss | – | – | 93 | Least concern |
| Black-striped Split-tooth DoridHypselodoris nigrostriata | Easy to miss | – | – | 91 | Least concern |
 Learchis PoicaLearchis poica | – | 1cm | – | 91 | Least concern |
 Warty Sea SlugPleurobranchus areolatus | – | 10cm | – | 91 | Least concern |
 Candiella ManicataCandiella manicata | – | – | – | 91 | Least concern |
 Cockerell's NudibranchLimacia cockerelli | – | 1cm | – | 90 | Least concern |
 Spectacled Rainbow DoridGoniobranchus annulatus | – | – | – | 90 | Least concern |
| Triple-banded Split-tooth DoridHypselodoris decorata | Easy to miss | – | – | 90 | Least concern |
 Three-lines Purple DorisMexichromis trilineata | – | – | – | 90 | Least concern |
 Ceratodoris rosaceaCeratodoris rosacea | – | – | – | 89 | Least concern |
| Macfarland's ChromodoridFelimida macfarlandi | Easy to miss | – | – | 89 | Least concern |
 Doto fragilisDoto fragilis | – | – | – | 87 | Least concern |
 Triopha modestaTriopha modesta | – | – | – | 87 | Least concern |
 Chromodoris westraliensisChromodoris westraliensis | – | – | – | 86 | Least concern |
 Tomoberthella MartensiTomoberthella martensi | – | – | – | 86 | Least concern |
 Tenellia ocellataTenellia ocellata | – | – | – | 84 | Least concern |
 Phyllidiopsis xishaensisPhyllidiopsis xishaensis | – | – | – | 84 | Least concern |
 Nero PorostomeDendrodoris krebsii | – | 2cm | 0-25m | 83 | Least concern |
 Paisley EeldragonBornella anguilla | – | 5cm | – | 81 | Least concern |
| Porter's Blue DragonNeptunazurea porterae | – | – | – | 81 | Least concern |
 Cadlina PellucidaCadlina pellucida | – | – | – | 80 | Least concern |
 Obscure HypselodorisHypselodoris obscura | – | 2cm | – | 79 | Least concern |
 Graceful Wrinkle DoridRoboastra gracilis | – | 2cm | 1-5m | 79 | Least concern |
 Lemon Lolly DorisDoris chrysoderma | – | – | – | 79 | Least concern |
 Taringa TelopiaTaringa telopia | – | 3cm | – | 78 | Least concern |
| Pink-eared Rainbow DoridGoniobranchus verrieri | Easy to miss | – | – | 78 | Least concern |
| Giant Frond-aeolisDendronotus iris | Easy to miss | – | – | 77 | Least concern |
 White-spotted Sea GoddessDoriopsilla albopunctata | Hard to spot | 2cm | – | 77 | Least concern |
 Tritonia HombergiiTritonia hombergii | – | – | – | 77 | Least concern |
 Starry Waffle DoridHalgerda indotessellata | – | – | – | 76 | Least concern |
 Felimare AgassiziiFelimare agassizii | – | – | – | 75 | Least concern |
| Collingwood's GoniobranchusGoniobranchus collingwoodi | Easy to miss | – | – | 75 | Least concern |
 Red-tipped Sea GoddessChromolaichma sedna | – | – | – | 74 | Least concern |
| Hypselodoris krakatoaHypselodoris krakatoa | Easy to miss | – | – | 74 | Least concern |
 Spurilla brazilianaSpurilla braziliana | – | – | – | 74 | Least concern |
 Glossodoris AcostiGlossodoris acosti | – | – | – | 73 | Least concern |
 Ornate FacelinidAustraeolis ornata | – | 2cm | 0-100m | 72 | Least concern |
| T-bar Pantechnicon DoridCeratosoma trilobatum | Easy to miss | – | – | 72 | Least concern |
 GastropodTritonicula hamnerorum | – | – | – | 72 | Least concern |
| Coryphellina flammaCoryphellina flamma | Easy to miss | – | – | 71 | Least concern |
 Ornate CadlinellaCadlinella ornatissima | – | 1cm | 5-12m | 71 | Least concern |
 Longibranchus PutnamiLongibranchus putnami | – | – | – | 70 | Least concern |
 Facelinopsis MarioniFacelinopsis marioni | – | – | – | 70 | Least concern |
 Eubranchulus RupiumEubranchulus rupium | – | – | – | 70 | Least concern |
 Black PhyllidiellaPhyllidiella nigra | – | – | – | 69 | Least concern |
| Yellow-edged Wart SlugPhyllidia exquisita | Easy to miss | – | – | 69 | Least concern |
 Peron's Sidegill SlugPleurobranchus peronii | – | – | – | 68 | Least concern |
 Rose PhyllidiellaPhyllidiella rosans | – | 3cm | – | 68 | Least concern |
| Starback Tentacled DoridAsteronotus cespitosus | Easy to miss | – | – | 68 | Least concern |
 Anne's PhyllidiopsisPhyllidiopsis annae | – | 0cm | – | 67 | Least concern |
 Chromodoris ElisabethinaChromodoris elisabethina | – | – | – | 67 | Least concern |
 White AeolidBulbaeolidia alba | – | 0cm | 1m | 67 | Least concern |
 Sunset Knobbed DoridAegires villosus | – | 0cm | – | 66 | Least concern |
| Halgerda willeyiHalgerda willeyi | Easy to miss | – | – | 66 | Least concern |
 Fringe-back NudibranchDondice occidentalis | – | 4cm | – | 65 | Least concern |
 Gaudy BabakinaBabakina anadoni | – | 1cm | – | 65 | Least concern |
| Jolly Green GiantMiamira sinuata | Easy to miss | – | – | 65 | Least concern |
 Facelina annulicornisFacelina annulicornis | – | – | – | 65 | Least concern |
 Gasflame NudibranchBonisa nakaza | – | – | – | 64 | Least concern |
 Verco's NudibranchTambja verconis | – | 9cm | 0-50m | 63 | Least concern |
 Beau Vallon Magnificent SlugMexichromis multituberculata | – | 2cm | Up to 12m | 63 | Least concern |
 Candiella LineataCandiella lineata | – | – | – | 63 | Least concern |
| Plocamopherus imperialisPlocamopherus imperialis | Easy to miss | – | – | 62 | Least concern |
 Hypselodoris VariobranchiaHypselodoris variobranchia | – | – | – | 61 | Least concern |
 Atlantic AnculaAncula gibbosa | – | 1cm | – | 61 | Least concern |
 White's HypselodorisHypselodoris whitei | – | – | 3m | 61 | Least concern |
| Double-banded Split-tooth DoridHypselodoris maculosa | Easy to miss | – | – | 61 | Least concern |
 Flabellina GabiniereiFlabellina gabinierei | – | – | – | 60 | Least concern |
 Hudson Spiny DorisAcanthodoris hudsoni | – | 1cm | – | 60 | Least concern |
 Gargamella RosiGargamella rosi | – | – | – | 60 | Least concern |
 Tayuva LilacinaTayuva lilacina | – | – | – | 59 | Least concern |
 Chromolaichma HemeraChromolaichma hemera | – | – | – | 59 | Least concern |
 Limacia McdonaldiLimacia mcdonaldi | – | – | – | 59 | Least concern |
 Goniobranchus SetoensisGoniobranchus setoensis | – | – | – | 59 | Least concern |
 Black DendrodorisDendrodoris nigra | – | 5cm | 0-26m | 59 | Least concern |
| Hilton's AeolidPhidiana hiltoni | Hard to spot | 3cm | 0-28m | 57 | Least concern |
| Triple-striped Split-tooth DoridHypselodoris emma | Easy to miss | – | – | 57 | Least concern |
 Doriopsilla PelseneeriDoriopsilla pelseneeri | – | – | – | 56 | Least concern |
 Amphorina FarraniAmphorina farrani | – | – | – | 56 | Least concern |
| Branched Soft Coral EaterPhyllodesmium poindimiei | Hard to spot | – | – | 56 | Least concern |
 Rostanga rubraRostanga rubra | – | – | – | 56 | Least concern |
 Kuiter's ChromodorisChromodoris kuiteri | – | 5cm | – | 56 | Least concern |
 Bill Clench's DorisFelimida clenchi | – | – | – | 56 | Least concern |
 Trinchesia CuanensisTrinchesia cuanensis | – | – | – | 56 | Least concern |
 White-tipped NudibranchCratena capensis | – | – | – | 55 | Least concern |
 Phyllidia UndulaPhyllidia undula | – | – | – | 53 | Least concern |
 Fire-gilled Wrinkle DoridNembrotha purpureolineata | – | – | – | 53 | Least concern |
 Krempf's PhyllidiopsisPhyllidiopsis krempfi | – | 4cm | – | 53 | Least concern |
 Edmundsella DushiaEdmundsella dushia | – | – | – | 52 | Least concern |
 Temperate Soft Coral EaterPhyllodesmium horridum | – | – | – | 52 | Least concern |
 Feathered DotoDoto pinnatifida | – | – | – | 51 | Least concern |
 Candiella StriataCandiella striata | – | – | – | 51 | Least concern |
 Grand PleurobranchPleurobranchus grandis | – | 15cm | – | 51 | Least concern |
 Black Gilled PhestillaPhestilla melanobrachia | – | 3cm | – | 50 | Least concern |
 Cape DoridHypselodoris capensis | – | 3cm | – | 50 | Least concern |
 Painted NudibranchHypselodoris infucata | – | 2cm | – | 50 | Least concern |
 Gold Lace NudibranchHalgerda terramtuentis | – | 3cm | 0-30m | 50 | Least concern |
 Bohol NudibranchDiscodoris boholiensis | – | 4cm | – | 49 | Least concern |
 NudibranchChromodoris joshi | – | 4cm | – | 49 | Least concern |
 Goniobranchus DaphneGoniobranchus daphne | – | – | – | 48 | Least concern |
 Boreoberthella ChaceiBoreoberthella chacei | – | – | – | 48 | Least concern |
| Alabaster Rainbow DoridGoniobranchus albonares | Easy to miss | – | – | 48 | Least concern |
 Trembling NudibranchGoniobranchus vibratus | – | – | 0-24m | 48 | Least concern |
 Aegires LeuckartiiAegires leuckartii | – | – | – | 48 | Least concern |
 Polka-dot Gobble DoridGymnodoris ceylonica | – | 4cm | – | 47 | Least concern |
| Pikachu NudibranchThecacera pikachu | Easy to miss | – | – | 47 | Least concern |
 White-lined CratenaCratena lineata | – | 0cm | 0-18m | 47 | Least concern |
 Hypselodoris jacksoniHypselodoris jacksoni | – | – | – | 47 | Least concern |
 Fiery Pump DoridOkenia amoenula | – | – | – | 46 | Least concern |
 Tessellated HalgerdaHalgerda tessellata | – | 3cm | – | 46 | Least concern |
 Gritty DorisGeitodoris heathi | – | 2cm | – | 46 | Least concern |
| Notodoris serenaeNotodoris serenae | Easy to miss | – | – | 46 | Least concern |
 Spurilla sargassicolaSpurilla sargassicola | – | 3cm | – | 46 | Least concern |
 Verconia HaliclonaVerconia haliclona | – | – | – | 46 | Least concern |
 Aphelodoris luctuosaAphelodoris luctuosa | – | – | – | 45 | Least concern |
 Ghost DoridLecithophorus capensis | – | – | – | 45 | Least concern |
 Yellow-edged CadlinaCadlina luteomarginata | – | 3cm | – | 44 | Least concern |
 Bushy-gilled Sucking DoridDendrodoris arborescens | – | – | – | 44 | Least concern |
 Glossodoris AngasiGlossodoris angasi | – | – | – | 44 | Least concern |
 Hypselodoris PeaseiHypselodoris peasei | – | – | – | 44 | Least concern |
 NudibranchBerthella ocellata | – | – | – | 44 | Least concern |
 NudibranchAeolidiella alderi | – | – | – | 43 | Least concern |
 Nudibranchus ExiguusNudibranchus exiguus | – | – | – | 43 | Least concern |
 Aquafresh Rainbow DoridChromodoris hamiltoni | – | – | – | 43 | Least concern |
 Danielle's NudibranchThorunna daniellae | – | – | – | 43 | Least concern |
 Cape Silvertip FlameAntiopella capensis | – | – | – | 43 | Least concern |
 Melibe ColemaniMelibe colemani | – | – | – | 42 | Least concern |
 Carminodoris nodulosaCarminodoris nodulosa | – | – | – | 42 | Least concern |
 Yellow-beaded GrapedragonDoto ussi | – | – | – | 42 | Least concern |
| Polka-dotted NudibranchPhyllidia polkadotsa | Easy to miss | – | – | 42 | Least concern |
 Red-spotted Rainbow DoridGoniobranchus heatherae | – | – | – | 41 | Least concern |
 Doriprismatica BalutDoriprismatica balut | – | – | – | 41 | Least concern |
 Inornate GymnodorisGymnodoris inornata | – | – | – | 41 | Least concern |
 Black NudibranchTambja capensis | – | – | Up to 30m | 41 | Least concern |
 Medallion Silvertip FlameAntiopella longidentata | – | – | – | 40 | Least concern |
 Dark Crowned DoridPolycera hedgpethi | – | 2cm | 0-10m | 40 | Least concern |
 Dendrodoris LimbataDendrodoris limbata | – | – | – | 40 | Least concern |
 Amphorina ViriolaAmphorina viriola | – | – | – | 40 | Least concern |
 Coryphella PiuncaCoryphella piunca | – | – | – | 40 | Least concern |
 Phyllodesmium JakobsenaePhyllodesmium jakobsenae | – | – | – | 40 | Least concern |
 Orange-bobble Gobble DoridGymnodoris impudica | – | – | – | 40 | Least concern |
| Hypselodoris paradisaHypselodoris paradisa | Easy to miss | – | – | 40 | Least concern |
 Diamondback NudibranchTritonia festiva | – | 1cm | – | 39 | Least concern |
 Dubious DoridPalio dubia | – | 1cm | – | 39 | Least concern |
 Marcus' AeolidCoryphellina marcusorum | – | 1cm | – | 39 | Least concern |
 Military Tentacle AeolidCaloria militaris | – | – | – | 39 | Least concern |
 Pallid GlossodorisGlossodoris pallida | – | 3cm | – | 39 | Least concern |
 Coryphella CapensisCoryphella capensis | – | – | – | 39 | Least concern |
 Tyrannodoris LuteolineataTyrannodoris luteolineata | – | – | – | 39 | Least concern |
 Ceratophyllidia papilligeraCeratophyllidia papilligera | – | 2cm | – | 39 | Least concern |
 Simple Rainbow DoridVerconia simplex | – | – | – | 38 | Least concern |
| Yellow Dragon Lobe-margin DoridMiamira moloch | Easy to miss | – | – | 38 | Least concern |
 Pikachu Longhorn DoridThecacera pacifica | – | 3cm | – | 38 | Least concern |
 Tenellia miniostriataTenellia miniostriata | – | – | – | 38 | Least concern |
 Phyllodesmium KoehleriPhyllodesmium koehleri | – | – | – | 37 | Least concern |
 Ornate PinstripeDermatobranchus ornatus | – | 5cm | – | 37 | Least concern |
 White-centred Rainbow DoridArdeadoris angustolutea | – | – | – | 35 | Least concern |
 Doto CervicenigraDoto cervicenigra | – | – | – | 35 | Least concern |
 Large Warted Sea SlugDoris fontainii | – | 8cm | – | 35 | Least concern |
 Thorunna KahunaThorunna kahuna | – | – | – | 35 | Least concern |
 Polycera faeroensisPolycera faeroensis | – | – | – | 34 | Least concern |
 Bermudella brunneomaculataBermudella brunneomaculata | – | – | – | 34 | Least concern |
 Nanuca SebastianiNanuca sebastiani | – | 1cm | – | 34 | Least concern |
 Coryphella chriskaugeiCoryphella chriskaugei | – | – | – | 34 | Least concern |
 Fleshy DoriopsillaDoriopsilla carneola | – | 1cm | – | 34 | Least concern |
 Unidentia sandramillenaeUnidentia sandramillenae | – | – | – | 33 | Least concern |
 GastropodTritoniopsis frydis | – | 1cm | – | 33 | Least concern |
 Blue Dorid NudibranchHypselodoris festiva | – | – | – | 33 | Least concern |
 Miraculous Egg-eaterFavorinus mirabilis | – | – | – | 33 | Least concern |
 MarioniaMarionia blainvillea | – | – | – | 33 | Least concern |
 Coryphellina PoeniciaCoryphellina poenicia | – | – | – | 32 | Least concern |
 Yellow Skirt SlugOkenia elegans | – | – | – | 32 | Least concern |
 Green/gold TulariaTularia bractea | – | – | – | 32 | Least concern |
 Nembrotha LorosaeNembrotha lorosae | – | – | – | 32 | Least concern |
 Dotted Bristle Sea SlugDiaulula punctuolata | – | 7cm | – | 32 | Least concern |
 Phyllidia RueppeliiPhyllidia rueppelii | – | – | – | 32 | Least concern |
 Goniobranchus tasmaniensisGoniobranchus tasmaniensis | – | – | – | 31 | Least concern |
 Kelp Orange-clubbed DoridLimacia jellyi | – | – | – | 31 | Least concern |
 Aeolidia LouiAeolidia loui | – | – | – | 31 | Least concern |
 Coral NudibranchPhyllodesmium serratum | – | 2cm | 0-30m | 31 | Least concern |
| Jason mirabilisJason mirabilis | Easy to miss | – | – | 30 | Least concern |
 Wasp Rainbow DoridGlossodoris bonwanga | – | – | – | 30 | Least concern |
 Doto FloridicolaDoto floridicola | – | – | – | 30 | Least concern |
 Gorgeous Triple-toothFlabellina funeka | – | – | – | 30 | Least concern |
 Chromodoris KalawakanChromodoris kalawakan | – | – | – | 30 | Least concern |
| Marie's MexichromisMexichromis mariei | Easy to miss | – | – | 30 | Least concern |
 GastropodAphelodoris antillensis | – | – | – | 29 | Least concern |
 Multicoloured Anemone EaterBaeolidia moebii | – | – | – | 29 | Least concern |
 Nanuca LealiNanuca leali | – | – | – | 29 | Least concern |
 Coryphella LongicaudataCoryphella longicaudata | – | – | – | 29 | Least concern |
 Strawberry RostangaRostanga arbutus | – | – | – | 29 | Least concern |
 Doris CameroniDoris cameroni | – | – | – | 29 | Least concern |
 African Rainbow DoridChromodoris africana | – | 4cm | – | 29 | Least concern |
 Small DotoDoto pita | – | 1cm | – | 29 | Least concern |
 Golden NoumeaDiversidoris crocea | – | – | – | 29 | Least concern |
 GastropodAustraeolis catina | – | 1cm | – | 29 | Least concern |
 Learchis evelinaeLearchis evelinae | – | – | – | 28 | Least concern |
 Orange-barred MexichromisMexichromis macropus | – | 2cm | – | 28 | Least concern |
 Phyllodesmium OpalescensPhyllodesmium opalescens | – | – | – | 28 | Least concern |
 Reef Orange-clubbed DoridLimacia lucida | – | – | – | 27 | Least concern |
| Pancake Lobe-margin DoridMiamira miamirana | Easy to miss | – | – | 27 | Least concern |
 Polycera norvegicaPolycera norvegica | – | – | – | 27 | Least concern |
 Doriopsilla GemelaDoriopsilla gemela | – | 2cm | – | 27 | Least concern |
 Mimic NudibranchPhyllodesmium rudmani | – | – | – | 27 | Least concern |
 Ardeadoris tomsmithiArdeadoris tomsmithi | – | – | – | 27 | Least concern |
 Antiopella BarbarensisAntiopella barbarensis | – | – | – | 27 | Least concern |
 Goniobranchus ThompsoniGoniobranchus thompsoni | – | – | – | 26 | Least concern |
 Ridged GymnodorisGymnodoris crocea | – | – | – | 26 | Least concern |
 Blue-ringed Rainbow DoridGoniobranchus geminus | – | 4cm | – | 26 | Least concern |
 Ardeadoris rubroannulataArdeadoris rubroannulata | – | – | – | 26 | Least concern |
 Goniobranchus epicuriusGoniobranchus epicurius | – | – | – | 26 | Least concern |
| Solar-powered NudibranchPhyllodesmium longicirrum | Hard to spot | – | – | 26 | Least concern |
 Oriental NudibranchChromodoris orientalis | – | – | – | 25 | Least concern |
 Verco's VerconiaVerconia verconis | – | 3cm | – | 25 | Least concern |
 Goniobranchus SinensisGoniobranchus sinensis | – | – | – | 25 | Least concern |
 Cadlina sylviaearleaeCadlina sylviaearleae | – | – | – | 25 | Least concern |
 Leather Backed DorisPlatydoris angustipes | – | – | – | 25 | Least concern |
 Carlson's HalgerdaHalgerda carlsoni | – | 4cm | – | 25 | Least concern |
 Goniobranchus albopustulosusGoniobranchus albopustulosus | – | – | – | 24 | Least concern |
 Tambja MullineriTambja mullineri | – | 3cm | – | 24 | Least concern |
 Red-ringed BluntnoseSamla bilas | – | – | – | 24 | Least concern |
 Diana's ChromodorisChromodoris dianae | – | – | – | 24 | Least concern |
 Hypselodoris KatherinaeHypselodoris katherinae | – | – | – | 23 | Least concern |
 Luisella EngeliLuisella engeli | – | – | – | 23 | Least concern |
 Yellow-spotted CadlinaCadlina flavomaculata | – | 0cm | – | 23 | Least concern |
 Hypselodoris ViolaceaHypselodoris violacea | – | – | – | 22 | Least concern |
 Painted DironaDirona picta | – | 2cm | – | 22 | Least concern |
 Precious ChromodorisGoniobranchus preciosus | – | – | – | 22 | Least concern |
 Orange Dragon SlugBornella calcarata | – | 4cm | – | 22 | Least concern |
 Dondice FreddiemercuryiDondice freddiemercuryi | – | – | – | 22 | Least concern |
 Doto GreenamyeriDoto greenamyeri | – | – | – | 22 | Least concern |
 Goniobranchus woodwardaeGoniobranchus woodwardae | – | – | – | 22 | Least concern |
 Tenellia PutiTenellia puti | – | – | – | 21 | Least concern |
 Hill's PleurobranchusPleurobranchus hilli | – | 21cm | – | 21 | Least concern |
 Blood Spot DorisAldisa sanguinea | – | 1cm | – | 21 | Least concern |
 Freckled Soft Coral EaterPhyllodesmium macphersonae | – | – | – | 21 | Least concern |
 Hypselodoris saintvincentiusHypselodoris saintvincentius | – | – | – | 21 | Least concern |
 Rustic AeolidEubranchus rustyus | – | 1cm | – | 21 | Least concern |
 Sea Whip SlugTritonicula wellsi | – | 1cm | – | 20 | Least concern |
 Hammerhead DotoDoto amyra | – | 1cm | – | 20 | Least concern |
 Wellington ArchidorisDoris wellingtonensis | – | 14cm | – | 20 | Least concern |
 Beaded Soft Coral EaterPhyllodesmium crypticum | – | – | – | 20 | Least concern |
 Kaloplocamus ramosusKaloplocamus ramosus | – | – | – | 20 | Least concern |
 Olive DoridTambja olivaria | – | 4cm | – | 19 | Least concern |
 Inkspot Pantechnicon DoridCeratosoma ingozi | – | – | – | 19 | Least concern |
 White DendronotidDendronotus albus | – | 3cm | – | 19 | Least concern |
 Queen Split-tooth DoridHypselodoris regina | – | – | – | 19 | Least concern |
 Carminodoris EstrelyadoCarminodoris estrelyado | – | – | – | 19 | Least concern |
 Berthellina delicataBerthellina delicata | – | – | – | 19 | Least concern |
 Brown TrapaniaTrapania brunnea | – | – | 0-20m | 18 | Least concern |
 Hiatodoris FellowsiHiatodoris fellowsi | – | – | – | 18 | Least concern |
 Dirona pellucidaDirona pellucida | – | – | – | 18 | Least concern |
 Pleurobranchus weberiPleurobranchus weberi | – | – | – | 18 | Least concern |
 Fine-lined TambjaTambja tenuilineata | – | – | – | 18 | Least concern |
 Four-colour NudibranchGodiva quadricolor | – | 2cm | – | 18 | Least concern |
| Starry DoriprismaticaDoriprismatica stellata | Easy to miss | – | – | 18 | Least concern |
 Dicata odhneriDicata odhneri | – | – | – | 18 | Least concern |
 Blue-speckled Sucking DoridDendrodoris caesia | – | – | – | 18 | Least concern |
 Spitfire Tentacle AeolidPruvotfolia rhodopos | – | – | – | 17 | Least concern |
 Three-color PolyceraPolycera tricolor | – | 1cm | – | 17 | Least concern |
 Purple-spotted HypselodorisHypselodoris purpureomaculosa | – | – | – | 17 | Least concern |
 Limacia inesaeLimacia inesae | – | – | – | 17 | Least concern |
 Miamira flavicostataMiamira flavicostata | – | – | – | 17 | Least concern |
 Cuthona TinaCuthona tina | – | – | – | 17 | Least concern |
 White Night DorisDoris odhneri | – | 14cm | – | 17 | Least concern |
| Dendrodoris grandifloraDendrodoris grandiflora | Easy to miss | – | – | 17 | Least concern |
 Coryphella TrophinaCoryphella trophina | – | – | – | 16 | Least concern |
 False DorisAdalaria proxima | – | 1cm | – | 16 | Least concern |
 Pastel Rainbow DoridGlossodoris hikuerensis | – | 6cm | – | 16 | Least concern |
 Bulbaeolidia OasisBulbaeolidia oasis | – | – | – | 16 | Least concern |
 Anteaeolidiella oliviaeAnteaeolidiella oliviae | – | – | – | 16 | Least concern |
 Rose-pink CuthonaCuthona divae | – | 1cm | – | 16 | Least concern |
 Rostanga crawfordiRostanga crawfordi | – | – | – | 16 | Least concern |
 Ward's NudibranchNotobryon wardi | – | 2cm | Up to 15m | 15 | Least concern |
 Magnificent Soft Coral EaterPhyllodesmium magnum | – | 9cm | – | 15 | Least concern |
 Mosaic PleurobranchPleurobranchus albiguttatus | – | – | – | 15 | Least concern |
 Armina scottiArmina scotti | – | – | – | 15 | Least concern |
 Gabriela's TambjaTambja gabrielae | – | – | – | 15 | Least concern |
 Doto FurvaDoto furva | – | – | – | 15 | Least concern |
 Ceratodoris mellitaCeratodoris mellita | – | – | – | 15 | Least concern |
 Coleman's PhyllodesmiumPhyllodesmium colemani | – | – | – | 15 | Least concern |
 Rudman's PhyllidiellaPhyllidiella rudmani | – | 4cm | – | 15 | Least concern |
 Baenopsis BaeticaBaenopsis baetica | – | – | – | 15 | Least concern |
 Porcupine DoridDiaphorodoris lirulatocauda | – | 1cm | – | 15 | Least concern |
 Starburst Sucking DoridDendrodoris elongata | – | – | – | 14 | Least concern |
 Doto UrakDoto urak | – | – | – | 14 | Least concern |
 Goniobranchus aureomarginatusGoniobranchus aureomarginatus | – | – | – | 14 | Least concern |
 Frilled NudibranchLeminda millecra | – | – | – | 14 | Least concern |
 California ArminaArmina californica | – | 4cm | 0-260m | 14 | Least concern |
 Dainty Rainbow DoridGoniobranchus conchyliatus | – | – | – | 14 | Least concern |
 Lemon NudibranchDendrodoris citrina | – | – | – | 14 | Least concern |
 Anteaeolidiella chromosomaAnteaeolidiella chromosoma | – | – | – | 14 | Least concern |
 Austraeolis StearnsiAustraeolis stearnsi | – | – | – | 13 | Least concern |
 Favorinus vitreusFavorinus vitreus | – | – | – | 13 | Least concern |
 Goniobranchus FabulusGoniobranchus fabulus | – | – | 3-15m | 13 | Least concern |
 Cerberilla PotiguaraCerberilla potiguara | – | – | – | 13 | Least concern |
 White Mantle GlossodorisGlossodoris buko | – | – | – | 13 | Least concern |
 Dermatobranchus caeruleomaculatusDermatobranchus caeruleomaculatus | – | – | – | 13 | Least concern |
 Gymnodoris StriataGymnodoris striata | – | 4cm | – | 12 | Least concern |
 Produnga RubropunctataProdunga rubropunctata | – | – | – | 12 | Least concern |
 Idaliadoris DepressaIdaliadoris depressa | – | – | – | 12 | Least concern |
 Palisa PapillataPalisa papillata | – | 1cm | – | 12 | Least concern |
 Pom-pom TaringaTaringa halgerda | – | – | – | 12 | Least concern |
 Baba's Festive AeolidBabakina festiva | – | 1cm | – | 11 | Least concern |
 Apata PriceiApata pricei | – | – | – | 11 | Least concern |
 Flowering ThorunnaThorunna florens | – | – | – | 11 | Least concern |
 Sandy Bead-noseNoumeaella rehderi | – | – | – | 11 | Least concern |
 Tenellia thelmaeTenellia thelmae | – | – | – | 11 | Least concern |
 Ridged Granulated DoridAtagema intecta | – | 4cm | – | 11 | Least concern |
 Maritime HypselodorisHypselodoris maritima | – | – | – | 11 | Least concern |
 Plocamopherus MaderaePlocamopherus maderae | – | – | – | 11 | Least concern |
 Armina OccultaArmina occulta | – | – | – | 11 | Least concern |
 Marioniopsis ViridescensMarioniopsis viridescens | – | – | – | 11 | Least concern |
 Black-tipped Spiny DorisAcanthodoris rhodoceras | – | 2cm | – | 11 | Least concern |
 Chromodoris CelinaeChromodoris celinae | – | – | – | 10 | Least concern |
 Bushy LacedragonMarioniopsis arborescens | – | – | – | 10 | Least concern |
 Martadoris LimaciformisMartadoris limaciformis | – | – | – | 10 | Least concern |
 Acute KaloplocamusKaloplocamus acutus | – | – | – | 10 | Least concern |
 Stubby DendronotusDendronotus subramosus | – | 2cm | – | 10 | Least concern |
 Variable Granulated DoridSclerodoris tuberculata | – | – | – | 10 | Least concern |
 The Limbaugh's CadlinaCadlina limbaughorum | – | 2cm | – | 10 | Least concern |
 Phyllodesmium hyalinumPhyllodesmium hyalinum | – | – | – | 9 | Least concern |
 Showman Wrinkle DoridNembrotha aurea | – | – | – | 9 | Least concern |
 Janolus mokohinauJanolus mokohinau | – | – | – | 9 | Least concern |
 Solanderia AeolidPleurolidia juliae | – | – | – | 9 | Least concern |
 Two-spot ThordisThordisa bimaculata | – | 2cm | – | 9 | Least concern |
 Benn's TrapaniaTrapania benni | – | – | – | 9 | Least concern |
 Cabangus RegiusCabangus regius | – | – | – | 9 | Least concern |
 Willan's PhyllidiaPhyllidia willani | – | – | – | 9 | Least concern |
 Dappled Pump DoridTrapania euryeia | – | – | – | 9 | Least concern |
 Goniobranchus HunteraeGoniobranchus hunterae | – | – | – | 9 | Least concern |
 Alloiodoris lanuginataAlloiodoris lanuginata | – | – | – | 9 | Least concern |
 Tenellia albocrustaTenellia albocrusta | – | – | – | 9 | Least concern |
 Hypselodoris SkyleriHypselodoris skyleri | – | – | – | 9 | Least concern |
 Idaliadoris NeapolitanaIdaliadoris neapolitana | – | – | – | 9 | Least concern |
 Goniobranchus loringiGoniobranchus loringi | – | – | – | 8 | Least concern |
 Ardeadoris averniArdeadoris averni | – | – | – | 8 | Least concern |
 Murphydoris adustaMurphydoris adusta | – | – | – | 8 | Least concern |
 Panther JorunnaJorunna pantherina | – | 1cm | – | 8 | Least concern |
 Janolus EximiusJanolus eximius | – | – | – | 8 | Least concern |
 Spotted RoundheadEubranchus ocellatus | – | – | – | 8 | Least concern |
 Hypselodoris IbaHypselodoris iba | – | – | – | 8 | Least concern |
 Tenellia NakapilaTenellia nakapila | – | – | – | 8 | Least concern |
 Corambe steinbergaeCorambe steinbergae | – | – | – | 8 | Least concern |
 Dark DotoDoto kya | – | 1cm | – | 8 | Least concern |
 Ceratodoris atkinsonorumCeratodoris atkinsonorum | – | – | – | 7 | Least concern |
 Coryphella cooperiCoryphella cooperi | – | – | – | 7 | Least concern |
 Corambe PacificaCorambe pacifica | – | – | – | 7 | Least concern |
 Blue-banded Pump DoridTrapania palmula | – | – | – | 7 | Least concern |
 Atagema spongiosaAtagema spongiosa | – | – | – | 7 | Least concern |
 Tenellia BughawTenellia bughaw | – | – | – | 7 | Least concern |
 Bermudella AngelensisBermudella angelensis | – | – | – | 7 | Least concern |
 Verconia RomeriVerconia romeri | – | – | – | 7 | Least concern |
 Thecacera MelkyiThecacera melkyi | – | – | – | 7 | Least concern |
 Decorated ChromodorisGoniobranchus decorus | – | 1cm | – | 7 | Least concern |
 Platydoris SanguineaPlatydoris sanguinea | – | – | – | 7 | Least concern |
 Nembrotha MullineriNembrotha mullineri | – | – | – | 7 | Least concern |
 Miamira AlleniMiamira alleni | – | – | – | 7 | Least concern |
 Livingstone's NembrothaNembrotha livingstonei | – | 3cm | – | 7 | Least concern |
 Orange-peel DorisAcanthodoris lutea | – | 2cm | – | 7 | Least concern |
 Hypselodoris ConfettiHypselodoris confetti | – | – | – | 6 | Least concern |
 Porcupine SakuraeolisSakuraeolis nungunoides | – | – | – | 6 | Least concern |
 Mimic DoridBaptodoris mimetica | – | 3cm | – | 6 | Least concern |
 Lion Mane AeolidPauleo jubatus | – | 4cm | – | 6 | Least concern |
 Wide-margined Rainbow DoridThorunna halourga | – | – | – | 6 | Least concern |
 Orange-edged Pump DoridTrapania vitta | – | – | – | 6 | Least concern |
 Chan's DoridHallaxa chani | – | 2cm | – | 6 | Least concern |
 Hypselodoris BertschiHypselodoris bertschi | – | – | – | 6 | Least concern |
 Green Candy RoundheadTenellia speciosa | – | – | – | 6 | Least concern |
 Harlequin FlameJanolus savinkini | – | – | – | 6 | Least concern |
 Lion Tentacle AeolidCratena simba | – | – | – | 6 | Least concern |
 Fragile DiscodorisSebadoris fragilis | – | 7cm | – | 6 | Least concern |
 Southern BaeolidiaBaeolidia australis | – | 3cm | – | 6 | Least concern |
 Phyllidiopsis sinaiensisPhyllidiopsis sinaiensis | – | – | – | 5 | Least concern |
 Filigreed Lightbulb DoridPlocamopherus ceylonicus | – | – | – | 5 | Least concern |
 Asteronotus mimeticusAsteronotus mimeticus | – | – | – | 5 | Least concern |
 Modest CadlinaCadlina modesta | – | 2cm | – | 5 | Least concern |
 Tenellia kuiterorumTenellia kuiterorum | – | – | – | 4 | Least concern |
 Anteaeolidiella cacaoticaAnteaeolidiella cacaotica | – | – | – | 4 | Least concern |
 Scott Johnson's NudibranchArdeadoris scottjohnsoni | – | – | – | 4 | Least concern |
 Purple-ringed BluntnoseSamla riwo | – | – | – | 4 | Least concern |
 Eubranchopsis VirginalisEubranchopsis virginalis | – | – | – | 4 | Least concern |
 Beaded Anemone EaterLimenandra confusa | – | – | – | 4 | Least concern |
 Egg-eating NudibranchFavorinus japonicus | – | – | – | 4 | Least concern |
 Diversidoris sulphureaDiversidoris sulphurea | – | – | – | 4 | Least concern |
 Lemon PleurobranchBerthellina citrina | – | 2cm | – | 4 | Least concern |
 Nightsky Tentacle AeolidAmanda armata | – | – | – | 4 | Least concern |
 Purple Spotted NudibranchChromodoris aspersa | – | 3cm | – | 4 | Least concern |
 Twinspot Rainbow DoridMexichromis pusilla | – | – | – | 4 | Least concern |
 Snow Queen LacedragonTritoniopsis elegans | – | 4cm | – | 4 | Least concern |
 Melibe CoralophiliaMelibe coralophilia | – | – | – | 4 | Least concern |
 Dark-spot CadlinaCadlina sparsa | – | 3cm | – | 4 | Least concern |
 Red-headed AeolidNoumeaella rubrofasciata | – | 1cm | – | 4 | Least concern |
 Smoky Sucking DoridDendrodoris fumata | – | – | – | 4 | Least concern |
 Burnt-edged Pump DoridPelagella longicornis | – | – | – | 3 | Least concern |
 British Columbia DotoDoto columbiana | – | 1cm | – | 3 | Least concern |
 Lemon-drop Longtail DoridDiversidoris flava | – | – | – | 3 | Least concern |
 Coryphellina lotosCoryphellina lotos | – | – | – | 3 | Least concern |
 Warty Soft Coral EaterPhyllodesmium tuberculatum | – | – | – | 3 | Least concern |
 Phyllodesmium IriomotensePhyllodesmium iriomotense | – | – | – | 3 | Least concern |
 Dermatobranchus funiculusDermatobranchus funiculus | – | – | – | 3 | Least concern |
 Sea BunnyJorunna parva | – | – | – | 3 | Least concern |
 Janolus incrustansJanolus incrustans | – | – | – | 2 | Least concern |
 Longhorn Pump DoridGoniodoridella savignyi | – | – | – | 2 | Least concern |
 Hypselodoris violabranchiaHypselodoris violabranchia | – | – | – | 2 | Least concern |
 Trapania toddiTrapania toddi | – | – | – | 2 | Least concern |
 Cardinal PhyllidiopsisPhyllidiopsis cardinalis | – | 4cm | – | 2 | Least concern |
 Pacific AnculaAncula pacifica | – | – | – | 2 | Least concern |
 Trapania miltabranchaTrapania miltabrancha | – | – | – | 2 | Least concern |
 Polka-dot Sucking DoridDendrodoris guttata | – | – | – | 2 | Least concern |
 Blue DoriopsisDoriopsis pecten | – | 1cm | – | 2 | Least concern |
 Bolland's HypselodorisHypselodoris bollandi | – | – | – | 2 | Least concern |
 Wormy NudibranchLomanotus vermiformis | – | 1cm | – | 2 | Least concern |
 Trapania ToraTrapania tora | – | – | – | 1 | Least concern |
 Doriopsilla RowenaDoriopsilla rowena | – | – | – | 1 | Least concern |
 Bermudella MijaBermudella mija | – | – | – | 1 | Least concern |
 Trapania KamagongTrapania kamagong | – | – | – | 1 | Least concern |
 Coral Feeding AeolidPhestilla lugubris | – | 4cm | – | 1 | Least concern |
 Southern Rainbow DoridThorunna australis | – | – | – | 1 | Least concern |
 White-speckled Sponge DoridRostanga lutescens | – | – | – | 1 | Least concern |
 Phyllodesmium ParangatumPhyllodesmium parangatum | – | – | – | 1 | Least concern |
 Scribbled Tentacle AeolidFacelina bourailli | – | – | – | 1 | Least concern |
 Feather AeolidFiona pinnata | – | 1cm | – | 1 | Least concern |
 Janolus flavoanulatusJanolus flavoanulatus | – | – | – | 1 | Least concern |
 Holey Split-tooth DoridHypselodoris lacuna | – | – | – | 1 | Least concern |
 Trapania TamarawTrapania tamaraw | – | – | – | 1 | Least concern |
 Coryphellina delicataCoryphellina delicata | – | – | – | 1 | Least concern |
 Tritonia ExsulansTritonia exsulans | – | 3cm | – | 1 | Least concern |
 Trapania scurraTrapania scurra | – | – | – | 1 | Least concern |
 White-stripe Rainbow DoridVerconia norba | – | – | – | 1 | Least concern |