Anyone know what this is?

[ashr]

It was on the side of one of my clams..
There are also a ton of little snails on it too as you can see.

[xtreme]

Pyramid snails. Bad news for your clams.

[Borderjumper]

It's a chiton and it won't bother anything. Those Pyramid Snails on the other hand will eat your clam and kill it.

[SeaHorse_Fanatic]

The flat thing is a chiton I believe. Looks like a wood louse bug.

Generally eats algae.

[jagermaier]

Looks like a Chiton...it's a marine mollucs.

[marie]

I assume you are asking about the chiton? They are harmless coralline algae eaters
Other then that I see what appears to be a pest anemone and parasitic snails

[Ryan-b]

Not sure about the one in the pic, but those are pyramid snails and not good when it comes to clams.

[Myka]

Originally Posted by Borderjumper

It's a chiton and it won't bother anything. Those Pyramid Snails on the other hand will eat your clam and kill it.

Agreed. The Pyramidellid snails will also attack larger snails, particularly Turbos and Astraea.

Here's some help: http://reefkeeping.com/issues/2008-02/nftt/index.php

[reefwars]

dude get those snails out asap they will kill your clam in no time very bad to have.

[ashr]

wow thanks all. How should I kill them? remove clam and clean it off in a bucket of salt water?