Sargassum

Sargassum fluitans
Sargassum natans

Coral belonging to the Class Hydrozoa (fire corals and hydrocorals) Coral belonging to the Class Anthozoa, Subclass Hexacorallia, Orders Scleractinia (stony corals) and Antipatharia (black corals) Seafans, Gorgonia flabellum or G. ventalina Coral in a coral reef, except for allowable octocoral Coral in an HAPC, including allowable octocoral Live rock - living marine organisms, or an assemblage thereof, attached to a hard substrate, including dead coral or rock (excluding individual mollusk shells)