Pyramid Snails around my Clam

[spaniard]

It appears that pyramid snails have made them self a new home in my tank and hunt my Clam during the night.

Already I have found 4 or 5 empty snail shells around my clam...
I've softly pulled my Clam from the substrate being careful to its foot and moved it to a new location in the tank.

Anything else I can do?

The underside of the clam did not have anything chewing at it.