What are these on my zoas?

[dmolavi]

Any idea what is growing along with my zoas? The top photo is something growing on the bottom and is about the size of a jellybean. The bottom photo has this thing that is maybe the size of a big Rice Krispie, and looks like it has a little fan-like thing sticking out the end.

 

[dmolavi]

Did some looking around, I'm willing to bet the fuzzy thing is a pineapple sponge, but the "foot" coming out of it is odd.

The other photo (w/ the zoas), is on the opposite side of the rock as the presumed sponge (the rock is maybe 1/4 to 1/2 inch thick at that point). Could it be another sponge growing through?

 

[Sniperhank]

You are correct on your ID on both sponges.

 

[dmolavi]

Harmless, correct? They don't seem to be bothering the zoas at all...

 

[bribo12]

Yes they don't grow a mat like some other sponges so it shouldn't irritate your zoas

 

[dmolavi]

Awesome, thanks.