Mol
Aquarium Advice Newbie
I just started up my 30 gallon tank last week and I have seen 3 of these things in my live rock so far. I was hoping someone could help me identify what they are? I was thinking it could be aiptasia since they do retreat back into their holes when frightened, but I am not sure. I am a newbie at saltwater and any help would be much appreciated! 
