Hey there, This evening I was doing some rearanging in my tank and noticed that my blue ultra was loose on his rock, I picked it up and the clam came but the foot didnt! It was just sitting there on the rock like the clam decided he didnt need it anymore. When I picked up the clam there was no resistance between the foot and the clam, it just separated... The foot had no odor, sign of decay or parasites, and the clam is open wide as usual.. What the heck is happenin here? Anybody???