I've never seen this before. Help please...

[DeSoDo]

Okay, so I noticed this today just after feeding the tank. It looks like a new head bursting through the polyp of my trumpet coral, but Google says that wouldn't happen. Any advice?

 

[BryanM]

Don't know, but it seems nifty, assuming its not harmful.

 

[DeSoDo]

Don't know, but it seems nifty, assuming its not harmful.

To my knowledge, I don't have anything in the tank that will nip at trumpets. My clowns just a hammer in the middle of the tank.