Every sea urchin on Fin, recorded across our dive sites.
Echinoidea
Diadema spp.
Toxopneustes spp.
Asthenosoma spp.
Strongylocentrotidae
Heterocentrotus mamillatus
Astropyga radiata
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 UrchinEchinoidea |
| Easy to spot |
| – |
| – |
| 13,138 |
| Least concern |
| Long-spined Sea UrchinDiadema spp. | Usually seen | – | – | 6,559 | Least concern |
| Flower UrchinToxopneustes spp. | Usually seen | – | – | 2,045 | Least concern |
| Fire UrchinAsthenosoma spp. | Usually seen | – | – | 1,415 | Least concern |
 Red Sea UrchinStrongylocentrotidae | Easy to spot | – | – | 1,068 | Least concern |
| Slate Pencil UrchinHeterocentrotus mamillatus | Usually seen | – | – | 510 | Least concern |
| Blue-spotted UrchinAstropyga radiata | Usually seen | – | – | 222 | Least concern |