资料来源 : Webster's Revised Unabridged Dictionary (1913)

Sea fan \Sea" fan"\ (Zo["o]l.)
   Any gorgonian which branches in a fanlike form, especially
   {Gorgonia flabellum} of Florida and the West Indies.

资料来源 : WordNet®

sea fan
     n : corals having a treelike or fan-shaped horny skeleton