What's happening with my Crocea Clam?

[fishpoop]

I've had this guy a couple of months and he's seemed happy (won't say it) where I placed him. This morning something looked odd, I noticed he had scooted about 3" forward and left this behind. It was NOT attached in any way to the clam and only attached to the rocks by a couple of threads.
The second pic is of the clam afterwards. looks fine to me. The back / bottom of the clam is smooth now, nothing sticking out. What happened?

http://i215.photobucket.com/albums/cc207/randybaer/DSC00135-1.jpg

http://i215.photobucket.com/albums/cc207/randybaer/DSC00131.jpg

[moliken]

they can drop their threads for whatever reason. what i see in the 1st pic should be np at all. beautiful clam too

[fishpoop]

Whew...Thanks for that info. I had no idea.

[moliken]

has it attached where it is now?

[fishpoop]

Same place, just a couple inches back and I've not yet checked to see if it's reattached. I'll give it a day or two. Seems fine. good extension and reactive to light. I haven't seen it try to move.

[fishpoop]

has it attached where it is now?

It still has not. I lifted it today and found it was making no attempt to attach. still seems quite healthy though.

[moliken]

put him up in the rocks, steady, high light, not a lotta flow.