This is very nice, a composition where everything is necessary and nothing is left out. Elements below the horizon line have corresponding elements in the sky, all is in balance. Correct use of the Rule of Thirds, to make the sky secondary but present, while the land and sea is primary.
My only quibble is that I am not sure what to make of the confused mass of waves at the lower left. It's not wrong, it just doesn't feel quite as right as it could. Not sure how to improve it, though. The "weight" of the image is in the rocks, and they feel kind of high up the frame. Cropping would throw the proportions of the frame off, for sure, so that won't work.
I might try burning the bottom edge to pull the overall weight down a bit to see if it felt better or not.
Very very well done, though, all around.