Can you Id this fuzzy spot on LR?

[bad santa]

I have just noticed this white fuzzy ball under one of my live rocks. Does anyone know what this is?

<a href="http://photobucket.com" target="_blank"><img src="http://i77.photobucket.com/albums/j63/badsanta72/fuzzyrock.jpg" border="0" alt="Image hosting by Photobucket"></a>

 

[bertoni]

A sharp closeup might help a lot. I'd guess sponge or tunicate, both harmless. Might also be an egg mass of some sort.

 

[bad santa]

Heres a better pic of it.
<a href="http://photobucket.com" target="_blank"><img src="http://i77.photobucket.com/albums/j63/badsanta72/fr4.jpg" border="0" alt="Image hosting by Photobucket"></a>

 

[bertoni]

Was that picture taken with the organism (or whatever) in the water? Sorry, if not, I should have warned you that the blob needs to be in the water.

So far, I can't tell what it is. I don't see any openings or structures that would indicate sponge or tunicate.