Is this fungus on my Zoos?

[SuperLes1]

Have 3 white bumps on these zoos and not sure what it is.
Just wondering if the white bumps are fungus or something else?

[PR_Reefers]

I believe that's some sort of sponge! or some kind filter feeder...

[Sinclair81]

Yea it looks more like a sponge Is it growing?

[Reef Bass]

+1 for sponge.

[CarltonsReef]

I'm seeing some bumps on other zoanthids in that picture. I'd dip it or removed asap.

[CarltonsReef]

I could be wrong but better safe than sorry

[PR_Reefers]

I'd personally remove them for aesthetic reasons and to eliminate any competition for growth it may have with the zoas.. :)

[SuperLes1]

I was able to pick the 3 sponges off the zoos pretty easily, also removed the muscle growing on there...looks a lot better now. Thanks :)