I bought a 8 pound live rock the other week. On the end, it looked as if a couple of clams died, and the rock embeded itself around the shells. There is a total of 3. And I thought they were dead because that have plants, and other items growing off the shell.

All three of them have opened up, and have been moving, so I now know they are alive. The thing that is throwing me for a loop, is they are not attached by a foot on the outside of the shell, but but the mouth. Meaning, something is coming out of the part that opens, and is attachd the the rock.

What do I have??


Also on the rock, I have gotten tons of baby feather dusters, what looks like a baby curly cue anemone, maybe a sponge, and plus who knows what else.