Can Someone Identify These?

[bvillalta]

Ive had this live rock for about 1 1/2 years now and then these blue guys started growing out of them. I have no idea what they are or what they're called and really want to know what they are called. Can someone else out there help me out and identify them??

 

[kkyyllee]

sponges

 

[bvillalta]

sponges

Thanks for that...but is there a more particuliar name to it or is it just a plain old sponge?

 

[kkyyllee]

im sure there is but i dont know it lol

 

[bvillalta]

im sure there is but i dont know it lol

Gotcha....lol!!

 

[Danno]

I believe it is a Green Ball Sponge.

 

[SkiFletch]

Lol, yeah there are tens of thousands of sponge species in the ocean, good luck IDing that specific one