comatula
Co*mat"u*la, n. Etym: [NL., fr. L. comatulus having hair neatly curled, dim. fr. coma hair.] (Zoöl.) Defn: A crinoid of the genus Antedon and related genera. When young they are fixed by a stem. When adult they become detached and cling to seaweeds, etc., by their dorsal cirri; -- called also feather stars.