What is the meaning of Sea_fan?

Any gorgonian (in order Alcyonacea) which branches in a fan-like form, especially of species Gorgonia ventalina ( common sea fan, purple sea fan) and Gorgonia flabellum (Venus fan, Venus sea fan, West Indian sea fan[[Category:Entries missing English vernacular names of taxa|]], purple gorgonian seafan) of Florida and the West Indies.

Source: wiktionary.org