Is this a sponge? Good or bad?

[Timothyh33]

Found something grey looking and sponge like on top of one of my rocks so I took it and and found a big orange sponge like thing on the bottom and the rock next to it had the same thing and I am wondering what is it and is it bad?

 

[Saltyreef]

Sponge = good.

If it starts covering coral just remove the parts you dont want.

 

[GaryE]

Well, it's dead now..

 

[Saltyreef]

My spongebobs survive a few minutes out of water.
I wish some died lol.

 

[GaryE]

Generally they can't survive in air..