Created this ocean in Cycles. Let me know what you think! Got a suggestion for a new tutorial? Let me know!
Nice, but perhaps the water looks a bit velvet-ey? What roughness have you used for gloss on the water material?
With the choppy, violent, motion of the waves it’d add realism if you add some type of foam. Also the material looks a little velvety as Matt stated. The actual ocean itself looks realistic.
Yeah, the roughness of the ocean material is set to about .100 or .200, still haven’t created the best ocean material yet 
Try something much closer to zero for the roughness of the gloss component of the ocean.