ID please

[Therinx]

Any ideas? Just popped up seemingly overnight. Best pics i could get, tried under white light and the quality was worse.

thanks in advance.

 

[DSC reef]

Looks like sponge. Sign of a maturing tank.

 

[Therinx]

Thanks, i think it looks like a pineapple sponge up close, but wanted to see what another pair of eyes thought

 

[Auquanut]

Looks like a sponge to me. Look around. There's liable to be more.

 

[Jeff Jarry reef]

Agree pineapple sponge