Sponge ID?

[ReefLife_Guy]

I know very little about sponges, I assume this some kind of sponge. Typically I would be fine with its presence but as you can see it seems to be invading the GSP and the GSP doesn't like it very much. Thought about taking this rock out and removing as much as possible and maybe spraying it with H2O2? any thoughts on ID or removal recommendations? Thanks!

 

[Saltyreef]

Common yellow sponge. Pull it away with your fingers or simply expose it to air.

 

[ReefLife_Guy]

Common yellow sponge. Pull it away with your fingers or simply expose it to air.

Do they typically form networks like that? If this wasn’t underwater I would say it was a fungus and those are hyphae in between the gsp polyps, do sponges look like that too?

 

[Saltyreef]

Do they typically form networks like that? If this wasn’t underwater I would say it was a fungus and those are hyphae in between the gsp polyps, do sponges look like that too?

Yes they do.
They can be invasive and smother out coral.