THe color is right for the strawberry anemone, but I have only seen a smooth surface on the top. No tentacles as of yet.
I've had those anemones before, but this doesn't look like that to me.
I don't know, people, this thing is looking more like a yuma to me each day ..
Whaddya think now? It's got a slight irridescence to it, unlike an average mushroom.