Why are my corals doing this?

[Steve1500]

I believe the green one is an open brain and the tallest one is a button coral. They used to stay flat until I moved them to a new tank. Now they seem to be growing heads. Parameters are similar to original but only 8 months old. I think the light is also stronger. Both seem to be ok other the protruding heads. Is this normal?

Thanks

 

[brandon429]

Great tank and polyps morph about as they please in response to feed and current and light convergence patterns unique to each tank they're doing great