White puffballs

[thresher9]

I'm rearranging my rock and on the underside of quite a few of them are these little white puffballs. They have holes and look porous almost like sponge. They only grow on the underside of the rocks, wherever it's dark I guess. I found some on the underside of my pump too. I think they're on the rocks that were on the bottom in the sand only. Are they bad or good?

 

[bang guy]

They are harmless Sponges.

 

[thresher9]

Wonderful, thanks!

 

[snakeblitz33]

Quote:
Originally Posted by Bang Guy http:///t/396219/white-puffballs#post_3529668
They are harmless Sponges.
Wow guy, I would have expected a specific species of sponge from you.... I know how you like cryptic zones. ;P
Sponges +1
I think I have even heard of them being called "Q-tip sponges."

 

[bang guy]

I'm getting old and can't remember. It's not a Sycon (Qtip). Wish I could remember but it's one of the few sponges that can crawl around.

 

[snakeblitz33]

Cool, a crawling sponge. That's a new one for me. I'll have to research it a little more.
Kinda looked like a Sycon to me at first, but now that I look at it....