Floating clams???

Question

I put alive clams in a bucket of salt water and one was floating.

Why?

Answer 1

It's dead.  Gases given off by any dead animal will cause it to float.  Throw it away.

Answer 2

the beard was keeping afloat

Answer 3

it could be mutated?

Answer 4

of course its dead.  you don't know that when thing are floating it means there dead.