Yes, Johanna, I like this other shot much more, as it gives the viewer a sense of how vast the ocean can be. (I was a sailor for 4 years, so I'm aware of very big things can 'get lost' at sea).
Um..it's a horizon, all right. A foreground element would have helped this image, as it's devoid of any sense of scale. Perhaps a small figure looking out toward the horizon. ah, well, no matter, this is all digital. Keep shooting!