Although commonly referred to as a "starfish", this animal is not a fish because it has no backbone. It is related to sea urchins and sand dollars, all members of the echinoderm (spiny skin) family. The nine-armed sea star has rows of small white tube feet under each arm that help it move and feed on organic matter in the sand. Often found buried in the sand, this sea star is able to regrow legs if wounded. We occasionally have this species in residence in the ELC Touch Tank.