Pylopaguropsis zebra
An uncommon little find in the Philippines' Visayas region, tucked into rubble and coral rubble year-round in 25.5-31.5°C water.
A small hermit crab recognised by the fine pale and dark banding running down its walking legs, giving it a zebra-striped look against the plain shell it carries. Like all hermit crabs it has no shell of its own, so the body is soft and tucked away, with only the striped legs and claws visible as it moves across the substrate. Size in the water is modest, closer to a fingernail than a palm, so it takes a slow, close look to spot.
Divers find it moving slowly across rubble and coral debris, using its striped legs to pick over the substrate for scraps rather than actively hunting. It tends to stay low and close to structure, retreating into its borrowed shell if a torch or hand gets too close. Best spotted on a slow macro-focused dive rather than a drift past open reef.
Like other hermit crabs, it doesn't grow its own shell but scavenges an empty one and trades up for a bigger vacancy as it grows, so the same individual might look different site to site depending on what shell it's currently wearing.
Sightings show no clear seasonal pattern, and the observed temperature range of 25.5 to 31.5°C covers Visayas reefs comfortably all year, so there's no strong reason to time a trip around a particular month.
Reef neighbours a diver could mistake it for. Use the identification notes above to tell them apart.
Currently logged only in the Philippines, with both known sites clustered in the Visayas region. It's an uncommon find even there, so treat any sighting as a bit of luck rather than a guarantee on a Visayas dive.
Mapping where Hermit Crab is logged…
The Zebra Hermit Crab has only been logged in the Philippines, specifically in the Visayas region. It's an uncommon sighting even there, so it's more of a nice surprise than a target species.
There's no detected seasonal pattern for this species. Water temperatures in its known range stay between 25.5 and 31.5°C year-round, so any month is fair game in the Visayas.
Look for the fine zebra-style banding on its legs as it picks slowly over rubble, carrying a borrowed shell rather than its own. It's small, so a close, patient look works better than a quick scan.
Exact size data isn't available for this species, but like most small reef hermit crabs it's a fingernail-to-thumbnail sized animal, easy to miss without a careful look at rubble patches.
Hermit crabs have soft, unprotected abdomens, so they scavenge empty snail shells for cover and swap to a bigger one as they grow. The shell isn't part of the crab's own body at all.
Site and sighting data is aggregated from diver logs, iNaturalist and GBIF. For taxonomy and conservation status:
Sally Lightfoot Crab
2,422 sites
