Button coral

[Kial]

My button coral seems to always have a part of its side raised. It used to stay fairly flat but now it does this?
It's not always the same part that goes up either and I hadn't changed the flow at all.

 

[TheEngineer]

Looks happy to me. Might just be catching some food, getting bumped by something or just getting caught in the flow. I wouldn't worry about it.

 

[Kial]

Ok cool thanks for the reply!