Unidentified Coral (pic)

[sharper]

Was digging through some liverock rubble in my filter chamber to discover this guy.
Anyone have any ideas what it is? Thanks!

 

[duec22]

I would say it's probably some kind of sponge.

 

[Thurge]

Sponge.

 

[tacocat]

I think it's a Squarepants.