Also found in: Dictionary, Thesaurus, Wikipedia.
Related to sea fan: red coral
sea fan,colonial marine animal forming erect, flattened, branching colonies in tropical and subtropical waters. Colonies may be several feet high and are often colorful, with purples, reds, and yellows predominating. The individuals, or polyps (see polyp and medusapolyp and medusa,
names for the two body forms, one nonmotile and one typically free swimming, found in the aquatic invertebrate phylum Cnidaria (the coelenterates). Some animals of this group are always polyps, some are always medusae, and some exhibit both a polyp and a medusa
..... Click the link for more information. ), have eight feathery tentacles and feed on plankton organisms. Sea fans are classified in the phylum CnidariaCnidaria
, phylum of invertebrate animals comprising the sea anemones, corals, jellyfish, and hydroids. Cnidarians are radially symmetrical (see symmetry, biological).
..... Click the link for more information. , class Anthozoa, order Gorgonacea.
sea fan[′sē ‚fan]
A form of horny coral that branches like a fan.