A couple of comments. The lack of blue in the water may come from the lateness in the day and the backlighting by the sun, but I'm suspecting the color balance in camera was tweaked to produce very warm tones (say, 6000K) and lots of light gelled to color correct the model back to something other than bright orange. This kind of setup is often accomplished with beauty dishes and/or ring lights (although the latter are hard to gel). An octabank may be in play. The octabanks are popular because they can provide such a large light source, while still focusing the light on the model. The ring, because it is at lens level, can fill in micropores and produce an amazing glow. Beauty dishes above, and just slightly off-axis are great at making skin tones jump. The trick, as noted, is to make this happen with lighting and not in post. Me? I'd hate to bring something like an octabank to the beach, but I've seen it done.
Out of curiosity, do you think this image is as-shot or are you suspect there was post processing but wonder how it might have been done with proper lighting?