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Hairy Pincushion Urchin (Tripneustes gratilla) Video

Pincushion Urchin relieving himself

When I saw a bunch of small particles flying around in the tank I thought maybe the clams were kicking up a dust storm or that maybe the cardinals had released babies into the tank, but no. The pincushion urchin had gone to the top of the tank and was relieving himself on all of his tank mates below.  Guess he doesn’t much care for them, lol.

Orange Pincushion Urchin Walking All Over Squamosa Clam

After the lights went out on the tank I noticed the pincushion urchin (added last week) walking directly over one of the clams.  My first instinct was to get in there and pull it off but I decided to wait and see if the urchin did anything destructive. After what seemed an eternity, the urchin made his way across the top of the clam and on to “greener pastures.” The squami was fine. 🙂

Orange Pincushion Urchin on Squamosa Clam

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