Probably won't be too hard to figure out what this is, in general. But can you guess specifically what you're looking at?
No hints on this one.
Continue to see the full image and an explanation …
It's not cotton. It's a view of cumulus clouds in the late afternoon, viewed from an airplane that's above the clouds.
Got a strange or interesting photo related to science, nature or technology? What the Heck, send it to me, and maybe I'll use it.