This is a young banded sea urchin (Echinothrix calamaris), still has its ...

This is a young banded sea urchin (Echinothrix calamaris), still has its balloon-like anal sac which is usually absent in adults due to a parasitic crab. The shorter clumps of the sharp venomous spines are golden brown in colour; Hawaii, United States of America
Image #: 33332735
See More From: Dave Fleetham