“The name echinoderm comes from the Greek echinos, meaning hedgehog, and derma, the skin.”

“The echinoderm body plan has pentameral symmetry, a water vascular system and a ring-shaped nervous system.”

“By contrast with other echinoderm species, basket stars are unknown in storm drift lines.”

“Marine invertebrates include ammonites, echinoderms, bivalves and crustaceans, but infaunal elements are rare.”

“The calcitic ossicles of crinoids, as is typical of echinoderms, form an internal skeleton that provides support and protection.”

“Most radially symmetric animals are sessile, however, echinoderms are able to move.”