Sea Urchin - CORTEZ SEALIFE AQUARIUM - stock video
407 views · Published 15 July 2011 · 0:21 · Indexed 30 October 2026
Channel: ezfishfinder · 2011 · Education
Sea Urchin - CORTEZ SEALIFE AQUARIUM - stock video Sea urchins or urchins are small, spiny, globular animals which, with their close kin, such as sand dollars, constitute the class Echinoidea of the echinoderm phylum. They inhabit all oceans. Their shell, or "test", is round and spiny, typically from 3 to 10 centimetres (1.2 to 3.9 in) across. Common colors include black and dull shades of green, olive, brown, purple, and red. They move slowly, feeding mostly on algae. Sea otters, wolf eels, triggerfish, and other predators feed on them. Their "roe" (actually the gonads) is a delicacy in many cuisines. The name urchin is an old name for the round spiny hedgehogs that sea urchins resemble.
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