I like the dreamy diffused glow of this image. It was shot down in Inchadony Beach a few weeks back.
Howto: First of all, I had to straighten the horizon because it was at a precarious angle. I used two layers, I saturated the colours slightly in the bottom layer to bring out the green of the sea weed.
I blurred the top layer and converted it to black and white using the channel mixer. I applied a layer mask of a gradient to make the bottom half of the lower layer visible and changed layer mode to screen with an opacity of 100.
I then corrected lens distortion using ptlens running in Wine. The horizon was noticeably bent but this program did a great job correcting that!