once in a long time, the wave you tried to photograph is exactly right as your mind saw it, is there in the camera. frozen, mid-air, stopped and you see everything as it was, and you want to shout, really really loud. did i mention, it doesn't happen often? the horizon clearly curves, downwards at the ends, when you get high enough you see it. sometimes we need to see things from a little higher up, than our usual position to see things as they really are.