Something growing on my rock work.

[saullman]

Can someone please help identify these. They are clear/whitish in color. They are all over my rock work, but seem to be lower towards the sand bed. Good, bad, or just there? Are they harmful in anyway? Should I try to get rid of them? Thanks.

 

[TheEngineer]

They look like pineapple sponges to me. They’re harmless filter feeders. They typically show up in dark spots like your sump and overflow.

 

[Lovemyreef2015]

+1 pineapple sponges.

 

[saullman]

Here's a few more shots.

 

[S-t-r-e-t-c-h]

Yup, definitely pineapple sponges. Nothing to worry about.

 

[reef lover]

+2 pineapple sponge

 

[saullman]

Yup, definitely pineapple sponges. Nothing to worry about.

Is there any invert that will snack on them or should I leave them alone?

 

[Lovemyreef2015]

I would leave them. They are harmless filter feeders.

 

[c.poindexter]

Pineapple Sponges all day.