I thought I'd do something with Photoshop. The hardest thing to do about this manipulation is getting the weather/mood dark. Take a look at the original image of the sea here,
http://www.deviantart.com/deviation/15866815 . I've messed around with the colours/contrast and finally I think it looks ok now.
For full view and credits, go to
http://www.deviantart.com/view/29392047