At 1st..i thougt it was photomanipulation of the earth taken from the space...after thinking hard, i also thought that this is a sky reflection on water.. and now i'm confused....what is the real answer?
If you can view the photo upside down, I think you'll have your answer.
I took a photo of the clouds at sunset. They just had a nice, unusual curve so I decided that if I flipped it around it would feel like the curvature of the earth. The black area at the top of the photo is actually the ground. You can see the tops of some trees in the top left corner.