gor·go·ni·an 
(gôr-gōnē-ən)
(gôr-gōnē-ən)n.
Any of various colonial corals of the order Gorgonacea (or Alcyonacea), having a usually branched skeleton of horny material and polyps with eight tentacles, and including the sea fans, sea feathers, and red corals.
[From Latin gorgonia, coral, from Gorgō, Gorgon-, Gorgon; see GORGON.]
gor·goni·an adj.
gorgoniancommon sea fan
Gorgonia ventalina