Sycone Sponge

[reepher315]

I was shifting some rocks around in the sump today and found this guy floating around. I thought it was a piece of cotton or something at first.

I've got some smaller ones scattered about but I've never seen one this big. Anyone else?

 

[Pife]

It looks like a sponge.

 

[reepher315]

It is. Sycone (qtip) sponge. I'm just shocked at the size. The rest in my tank are very small.