I really dig that shot, that is seriously cool looking. Color, composition, everything. It's awesome. It feels like the horizon line is off, and I keep staring going "no... it's not. I can see that it's not." hahaha, I even copied and check real fast, it's on... it just has an effect to feeling like it's dropping on the right.
Could be these pennies underneath the left of my monitor stand, or hour 9 at work...
Much cooler tone to it than the last time I was there. Ohhh and when they put up the sting ray signs about shuffling your feet they are serious, those little buggers really hurt when you step on one.
Color is not too cool for your intended use. I would like to see a bit more of the cloud detail that gets lost in the darkness. You might be able to pull some of that out with a layer mask and tweaking the curves.
And the sharks....... heck, ever fly into Tampa over the water and look down. If all those people in the water saw what was out there just beyond them they would never even go in a bathtub again. lol