Peppermint Shrimp eating Stylophora coral

[Tripspike]

Is it common for a peppermint shrimp to attack a Stylophora coral. The coral has been doing very well. I noticed a white spot on the base of the coral this morning. It had looked very healthy yesterday.

Tonight with a flashlight in hand I caught a peppermint shrimp on the coral pecking away at it. Is it just cleaning it or does it like the polyps for dinner.

Thanks for your input,

Trip