Friend or Foe?

[Infern0]

Looking to identify this as friend or foe.. have never seen one. There are many in the Tank now

 

[harley32907]

Looks like a sponge, friend

 

[minus9]

Pineapple sponge. Great little filter feeders.

 

[Infern0]

Pineapple sponge. Great little filter feeders.

Thanks

 

[Infern0]

Looks like a sponge, friend

Thanks

 

[Just John]

Perhaps because I spot feed corals almost daily, I have started to have serious problems with these. Today I decided that I have to stop because I have had an outbreak of hundreds of sponges. I need to take out one rock and scrape off a large patch today. The white fuzzy patch is where I scraped some off, but not very thoroughly and they are growing back.