That's a terrific shot--just terrific. First, I love, love, love the framing by the geography...most photographers who achieve stuff like that have to use artificial means like doorways or windows or fabric...instead you've got nature helping you out. Good stuff. And she's lovely. It's a great pose. The depth of field was a wise choice. Color and light is good. I've got only two things to quibble about: her left thigh, just a few pieces of the bikini bottom tie...b/c we see so little of it, its' distracting and detracts from the line she creates with her thigh and hip. Second, on her right thigh there is something small that protrudes just above the waterline. For the life of me I can't figure out what it is...a bit of foam from the water, a very large wart, who the heck knows. But you should clone that out.
One last thing--and it's a very small thing. I don't think it detracts from the photo at all. But if you had a chance to shoot her here in this setting again, I'd pose her so she doesn't have her right elbow with the cliff/rock in the background. I think it would be even lovelier with her totally surrounded by sky and then the rock arch. And that said, that's not a negative thing in my mind, just one small element that could make future shots/poses in this setting even better.
Thanks for sharing....