It's either a Frogspawn or a Hammer coral. I've seen pictures of Frogspawn which look just like it. However I've tried to get it identified on 3 different forums and the majority so far think its a Hammer. Either way its pretty sweet. It's not fully open in that pick. I just mounted him with some plumbers putty 30 minutes prior to the pics. The hole I stuck it in was too big and it kept shifting to the right. I came home one day and the left most head was looking pretty bad because it was basically being shaded by the other heads.