Interesting; two different suggestions for the water. I'll add a third; increase the patchyness, so it gets more windblown, with parts higher waves and parts lower. And increase the height of the clouds, not altitude, but height (it's probably the default 150m, so make it 500 or even higher, or mask the density shader by a very big fractal, so they are more sparse); they are very flat and thus catch too much sunlight and bleach out.