feather star

feather star


Feather star (Comantheria grandicalyx)—Douglas Faulkner

Any of the 550 living species of crinoid echinoderms (class Crinoidea) that lack the stalk that their relatives the sea lilies use to attach themselves to the ocean bottom. Most species have five feathery-fringed arms. Feather stars usually attach themselves to a surface or a floating object and feed on drifting microorganisms, trapping them in their sticky arm grooves. They live mainly on rocky bottoms in shallow water. Most abundant from the Indian Ocean to Japan, they are also found in the Atlantic.

This entry comes from Encyclopædia Britannica Concise.
For the full entry on feather star, visit Britannica.com.

Seen & Heard

What made you look up feather star? Please tell us what you were reading, watching or discussing that led you here.