zoanthid parasite?

[dannygreen]

Hey guys,
I have this stuff growing on one of my live rocks and it seems that it
has attached itself to my zoanthids. Can anyone tell me what it is and if it is bad. Then if it's bad how do i get rid of it.

 

[Ladipyg]

Looks like a piece of sponge...try peeling it off...

 

[islandcreation]

Yup, its a sponge. Just peel it off.

 

[3mrhythm]

did you peel it? you can stick it to another rock if you like it.. if you have any angels they would prolly pick at it and eat it

 

[RScovi]

a pesky sponge. Careful with the peeling