Did you notice your horizon in the photo is level? Hold a piece of paper even with the horizon line. You will see what I mean. There is no curvature to the Earth. Check other pictures of the ocean and you will see the same thing. Even pictures from far away with mountains will show a level Horizon if the altitude is high enough. The mountains all blend in together into the flat plane at a distance. The only time you will see curvature is when a fisheye lens is used. The Earth is flat we have to make people aware of this. The initial shock and mockery phase is worth the price. God bless