Anyone identify this please

[mikel218]

Seems to open up slightly and snap shut at times

 

[ebushrow]

Looks like an oyster

 

[TJ's Reef]

Hard to tell from pic but looks like a Boring Clam, if so just a good filter feeder and have many in my system. Mostly they are underneath or in crevices, some are even quite colorful with blues and greens.

Cheers, Todd

 

[tuna_bullet]

+1 on the oyster or mussul you get some hitchhikers sometimes just think of it as a bonus.............

 

[mikel218]

Sounds silly but almost looks like it's got a set of teeth. Il look it up and try find out what it is. That piece of rock I driving me mad pulled 5 nudibranches off it recently and zoas won't open because of them