What happened to our clam?

[doublette]

EmilyB: The clam did attach itself to the rock once it was moved off the sand. Although it didn't seem to have a very strong hold as I had found it back on the sand bed one time. When it was on the sand bed there was nothing for it to attach to. At the time we were told it that would be okay. It was pretty cool watching how it would turn itself around. It looked like it was sucking in a whole bunch of water, then it would almost completely close itself up. Then all of a sudden it would shoot the water out causing it to do almost a 90 degree spin. I took it as a sign it wasn't happy and that was when we moved it to the rock.