Can anyone tell me what this is?? It came on some liverock from my LFS. Light blue tentacles, pretty small, I put the plug in the picture so you would have an idea of size.
Possibly Ball Anemones. They look like anemones, but are more related to mushrooms, I believe. I have a few, they tend to hang out in shadier spots. They sort of look like what is in your pic, though they can be different colors. Very small in size.
If you notice from the picture, there are three of them together on this "head". One closest to the plug, one a little below that and to the left, and then the tentacles to the top and left...
Looks like Cup Coral is the winner... It is actually very pretty, just really small... Thanks for the help and suggestions everyone. I know the pics were not terrific