I don't know when the image was ready, all I know was that I aborted it after 4 hoursbut it probably got noise free much earlier than that.


Anyway, as for the foam that's actualy just a simple texture with displacement. I've actually made a simple breakdown of this scene on my faceobok page, check it out:
https://www.facebook.com/JohannesL.Visualisation
I'll actually re-render this scene and check the exact time so we could have a fair number
