What are these fuzzy looking things on my rocks?

[jordancemery65]

I have these gray/tannish colored things on my rocks... i always thought it was just debris/detritus but when i blow it off with a turkey baster it always attaches somewhere else and comes back. I will post a picture to help with the identification process...

[jordancemery65]

http://s255.beta.photobucket.com/user/jordancemery65/media/B5262188-ED69-4D87-9F94-3B7783813AB7-236-0000001F174E323E.mp4.html

[biocube14g]

Bad link.... Does not work

[biocube14g]

Nvr mind... I'm just crazy!

[DLANDINO]

I can't tell from the video what it is that you are questioning. Can you post a still and photophop a circle around the thing?