Thanks for the help. I removed the snail to be on the safe side. It was eating at the coral. The brown "tree" and the animal behind it are actually the same thing. It extends up and down periodically through the day. It also moves around the aquarium. Since posting this picture it has moved over to the other side of the rock it was on. So, since it's one animal, are you leaning toward a Kenya tree or anemonie? Thanks, Nathan.