Sea Urchins

A man holds a sea urchin, taken from the sea.

Sea urchins are echinoderms, and are part of the class Echinoidea. Habitat and Behavior Sea urchins are very versatile, and can be found in all of the world’s oceans. Sea urchins typically live on the seafloor and can be found in shallow coral reefs, tide pools, seagrass beds and kelp forests. Sea urchins can live … Read more