ray

i have a few of these little things that look like clams or scallops or something... i guess they came on my rock? i dont know if they are alive or what i just see a few shells like this in my tank...
any ideas what it could be?

Tumbleweed

If they look just like mini clam shells, my came with them also, but they are usually just empty shells. But not always. Just keep an eye o them, and maybe snap a couple of pictures of it and post it so we can see them.

sirdarksol

I'm not sure what they are, but they look neat.