\Sea" a*men"o*ne\ (Zo["o]l.)
Any one of numerous species of soft-bodied Anthozoa,
belonging to the order Actrinaria; an actinian.
Note: They have the oral disk surrounded by one or more
      circles of simple tapering tentacles, which are often
      very numerous, and when expanded somewhat resemble the
      petals of flowers, with colors varied and often very
      beautiful.