Please ID this nasty looking thing on my live rocks

[kelogz08]

Hello fellow reefers,

I saw these white larvae like creatures in my live rocks. I would like to know if they are beneficial. If not, how to get rid of them.

Thanks for your help

 

[marrone]

They look like Q-tip or Pineapple Sponges. They're a good thing!

 

[kelogz08]

oops, just brushed them of some of the rocks. lol. but thanks for the info!

 

[thirty6]

oops, just brushed them of some of the rocks. lol. but thanks for the info!

Probly more in tank. My overflow has a bunch

 

[Johnny Spesis]

I have them, on the underside of my live rock, and all over. I was told there Sea squirts. It doesn't seem to be Atpaisia.

 

[johnsonpics]

I've got the same things. A few are the size of grapes. Some type of sponge, but never has hurt anything. Thanks Marrone for the ID, I've never been able to figure out what they are called.

 

[rookie07]

Pineapple sponges don't get to big. If it's the size of a grape it is a different type of sponge.

 

[marrone]

That's not true, though most stay on the smaller size, I've had some that have gotten to be a good size, a couple even larger than a size of a grape.

 

[gpscuba]

I had the similar thing in my tank they never grew to the size of a grape never harmed anything