echinodermata

Hydro-Powered Holothurians: California Sea Cucumbers

During a late afternoon dive several years ago in Fiji, I came across a sea cucumber (Bohadschia graeffei) that was upright and swaying like a cobra dancing to a snake charmer’s tune. That was very strange and I didn’t know what to make of it. I watched for a while, swam away, then came back, intending to photograph the sea cuke’s mouth and the tentacles surrounding it, which were black with flat, leafy white tips.  That’s when things got stranger. Rising in the water from […]

She Seas Sea Stars: Sea Stars Exposed

Lying on or crawling ever so slowly across the bottom, the sea star looks deceptively simple and slightly out of place — like it might have fallen from a child’s crude drawing of the night sky and landed on the sea floor. But don’t let the sea star’s appearance fool you. It’s a complex, fascinating creature, indeed.  For example, the sea star doesn’t have to ingest its food; it covers it with its oral disc (body) and then extrudes its stomach (which resembles a tiny, […]

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