What is this growth?

[Royy13]

There seems to be some sort of growth on the top and bottom of this blasto. It’s white and fuzzy looking. It’s causing the coral to not open all of the way. Anyone know what it is and what I need to do to treat it?

Thanks,
Roy

 

[KJ]

Pineapple Sponge

 

[Benga]

Yep pineapple sponge, i got tons of them usually in the shadows or crevices.

 

[ccoffel81]

Pineapple Sponge

+1