Need help identifying this little guy!

[Klyle]

Can anyone identify what is growing on my hammer coral? At first I thought the hammer was dividing but now I’m not so sure...feather duster perhaps? It doesn’t seem to be irritating the coral at the moment but definitely getting bigger! Thanks

 

[ludnix]

It's a Pineapple sponge which is a harmless filter feeder. Cool find!

 

[andrewey]

Looks like a pineapple sponge to me.

 

[Knightreef]

+1 on Pineapple sponge. Just found a few of these on my zoas the other day and had the same question.

I found a couple if these just popped up on a few of my ZOA frags. Some type if sponge maybe?

 

[Klyle]

Sweet! Thanks for the info. I shall let him live.