white fuzz, help!

[Critter303]

I have this white looking fuzz growing on the underside of some of my rocks , what is it?..,

 

[garygonzales]

um........pic ?

 

[thegrun]

White fuzz

 

[oneofmany]

Check this out.

http://chucksaddiction.thefishestate.net/ (Info Links > Hitchhikers > Algae)