We'll have to check out the shell. It's upside down and the body was quite a distance from the shell and then yesterday was gone, so I figured the peppermint shrimp probably ate the body.
Everything else looks like it's doing very well, infact we're still finding new things: worms, small featherdusters, and tiny pods
in the sand bed. There is one huge bristle worm. I haven't seen the whole thing, but what I saw of it was about 4 - 6 inches long and quite thick.
There is something growing one one of the live rocks in the 10 gallon tank that is brownish. We'll have to take a picture to post to make sure it's ok.