Anyone know what this is?

[jtinoco]

I really don't know how to describe it. It's live rock I guess. My friend has one of those nanos that have the built in overflow in the back then it's sectioned of with a small refugium. He had that piece in there with rubble. It was at the very bottom and I don't think it had been exposed to light. He let me have it. I liked the way it looked. It's light and it almost feels like it's bone. Doesn't have much of the live rock feel.

Anyone seen this before?

 

[pnavarro170]

yeah its just a dead coral shell, id remove it.

 

[iamwrasseman]

+1 on the dead coral skeleton

 

[jtinoco]

Dead sun polyp perhaps.

 

[chuy marquez]

Dead sun polyps. I have two dead ones just like it .