Clam

[cybercron]

Hello Again,

In my latest inspection I have also found some sort of clam living on my live rock. It opens and closes periodically. It is the circular chape next to the Blennie.

Van

 

[ReefLady]

Hard to tell from the pic, but it's probably a tunicate (ascidian - or "sea squirt"), or a sponge.

 

[ReefLady]

Whoops - missed the fact that you said "clam" - sorry! We have several small bivalves that came as hitchhikers on our LR. They won't hurt anything, and are decent filter feeders.