Need some help here!

Came home and was playing some Metriod Prime 3 and saw my Cleaner Shrimp nipping at my clam. Never thought that would happen... Anyone heard of this? The clam is brand new and I was able to save it and move it to the other end of the tank. My Cleaner Shrimp is territorial and won't come to the other end of the tank.

Any help here would be great! Thanks