Please help ID this.

[Burly]

This thing showed up in my refugium. Its like a white ball with anchoring fibers radiating outward. What is it?
Thanks.

 

[spieszak]

my guess would be sponge.

 

[TattedUpFishGuy]

+1 sponge

 

[InOrderToBeAble]

I think it is a type of microglass sponge.

 

[Betta132]

Some sort of harmless little sponge. Not dangerous or even annoying, just cool little beasties.