Digital Cross-Processing
Cross-processing is a technique from the era of film and print photography, using different chemicals on a negative to produce a rapidly different visual effect instead of a more naturalistic look. Using Photoshop it is possible to achieve the same effects, making us of various toning levels and some additional adjustments to the overall shadows/highlights.
The image itself comes from my trip with the photography department to Port Maria in Jamaica and shows Cabarita Island just off the coast. There are some Photoshop actions which can result in similar edits to this, but I recommend looking for a proper editing path as it allows for some more accurate adjustment layers.
The image is also a good example of why it's important to get up early at times, with the dawn weather proving nicely clouded. Once the sun comes out it is really easy to see all the cloud layer get burned off leaving a very bright sky that makes landscape photography. No more lying in for me this summer it seems.