Quote - That's nice. Is it possible to get a touch of foam on the tips of the crests?

I believe there is a tutorial in the Bryce section of the tutorials part of Renderosity that deals with that exact thing. As I recall, it involves a duplicate of the terrain that was used to create the high sea with the Y scale slightly larger than the original, and a cloud material applied to it. I'm not sure where to find it but I think you should be able to find it if you visit the tutorials for Bryce. If you do, let me know what you find; and if you do a render using the technique that turns out the way it should, perhaps you could upload it for us to see.

Stay awesome!

Agent 0013.