I first cloned the entire picture and set it to hard light to give it more vividness since it was so damn blah and non-contrasting at first. I merged the layers and tweaked brightness/contrast till it looked reasonable.
Then I went to channels and merged the values of the green and blue channels into one layers since that was the general composition of the water. From there I used lots and lots of curves + painting to make it so that the ocean was the only area selected. I then went back to the main area and dropped a blue color into that selection on hard light. Then I went back to the channels again and Increased the values of the blue channel on the water and darkened the Red and Green layers.
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