What type of sponge is this?

BlackTip

Active member
My GSP was retracted, and I saw what looks like sponges growing among the polyps. Any idea what they are? Good or bad?

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It's GSP! It looks like it's a sponge. If you don't like it or it starts killing the GSP, pick it off. If they live together in harmony, leave it alone.
 
I don't think it is a sponge. Might be a barnacle. Do you ever see anything come out of it?

I never seen anything comes out of it. I can see it only with the GSP is retracted. I had this GSP since it was couple of inches, so the animal must have been there since then.

It's GSP! It looks like it's a sponge. If you don't like it or it starts killing the GSP, pick it off. If they live together in harmony, leave it alone.
The GSP looks very healthy. Any idea what type of sponge it is?
 
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