Here is another new render. I reworked the foam and used two simple surface shaders, one rather dark and another one more blueish with an additional reflective shader, merged the surface shaders with a merge shader with one of the displacement PFs as function to replace the water shader, which reduces rendertimes dramatically.
Right now I am rendering frame 93, so it's going to take some time to finish it. When it's done, I'll put it on youtube, because the quality on vimeo is really bad. Every detail gets lost.