Friday, August 7, 2009

Pea crab

Found a pair of pea crabs nestled in a tube under a rock. I'm not sure what built the tube, but it wasn't the pea crabs. These odd, double-wide crabs insert their soft bodies into tube worm tubes, clam shells, shrimp burrows, anywhere that will allow them shelter and a flow of plankton and detritus. They're freeloaders, but not exactly parasites. It appears the scientific term is "commensal indwellers."

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