What the heck is this?

[turbo_teg98]

I have 3 of these on my rocks. I have no clue what they are. Its a white puffy thing in the middle of the rock. Its definitely not a feather duster I know that much. Is it good or bad?

 

[meowzer]

Looks like sponge....harmless...will come and go....

 

[turbo_teg98]

Quote:
Originally Posted by meowzer http:///t/388344/what-the-heck-is-this#post_3424461
Looks like sponge....harmless...will come and go....
Thanks for the ID mom