Picture doesnt do it justice. Its mostly brown in color with some teal green highlights. Very beautiful when open. Its a stony coral encrusting a rock. A piece came off that I saved and it does have a stony skeloton underneath it. It will also take small meaty shrimp. I noticed when feeding the fish occasionaly a small mysis will drift onto it, it will wrap its tentacles around it and eventually swallow it. Anyone have a clue what this is?