this is looking amazing. i think the last couple of images look the best, but to me the water looks to grey/silver. i dont know if that is more accurate, but considering the tropical feel, i think you should be able to see a bit of sky/sun, and more blueish tinge to the waves ( i know you had the blue waves, but with the shader you have now, and a more blueish tinge i think it would look awesome). . just personal thoughts