clam moved?

[Viv]

Found my clam on the sand substrate. It had anchored itself in a nook on rock. All seemed fine. Expanding, without difficulty. Now the foot, or some kind of white stuff is still anchored by a thread where it was and the clam is in the sand. I place it on a different rock. What happened? Did it yank itself off, riping the foot? Will it be ok, should I do something or just let it be?
Thanks in advance for any help you can share.

[Viv]

Tried to get a pic of what was left. The circled white part is flesh, now apearing kinda stringy in the tank. I moved the crocea to a new place on rock.

[Viv]

Well update to my own thread...moved the clam to the new spot and he seems to be ok. He seems to have anchored himself, ok and is expanding. I changed the rock around so he would be cradled in a crevice. In the beginning of this new spot he was rocking a bit but now is pretty stationary. No fish in the tank yet, just some snails and other corals. Maybe the weight of a turbo snail? Anyway so far so good. Still wonder whether he did it himself or something happened. I do have bristleworms, not a whole lot, I think, but I know they are there (every once in a while I catch a glimpse of a tiny one).

[Loverotties]

They will move around to where they like it.Maybe the flow and/or light.

[512148048]

just to ley you know 2 of my 3 clams moved 1 did for about a month and the other is still moving i think its finaly setteled i got lucky they are all right next to each other and make for a nice corner of my tank.

[reef_noob]

My crocea moved as well, I had him on the bottom in direct MH light, but he moved off a bit into the shade. I guess it was too much light...