need an ID white tubes

[mrbh22]

I have a few of these white fuzzy tubes in my tank and I do not know what they are. They are on the underside of the rocks . Please let me know asap. thanks in advance

Mike

 

[rtrenor]

Tunicates. A.K.A. sea squirts. Beneficial filter feeder.

 

[cparka23]

Those are pineapple sponges. Nothing to worry about.

 

[Squishie89]

Those are pineapple sponges. Nothing to worry about.

+1 Indeed sponges

 

[WillKatt]

+1 Indeed sponges

+1 again

 

[mrbh22]

Thamks for the fast response! I was hoping that they were not a bad thing I just had to deal with an aptasia. Thanks agagin

Mike

 

[Brinkfish312]

I have a few of these white fuzzy tubes in my tank and I do not know what they are. They are on the underside of the rocks . Please let me know asap. thanks in advance

Mike

I realize that this is an older thread, but my question is this: we've been seeing a few of these sprout up in places and I have some sprouting/colonizing on the side of a button polyp colony. Will these irritate or inhibit coral growth at all actually being ON the coral itself? Should I try to remove them? Thanks for the response