I sent DG some notes so we could work out what way we wanted to do the comp for the under water shots. I also did some rough drawings of possible looks/Effects with the characters and assets included.
I've sent DG some images that I though had good under water lighting. We've talked it over and are going for a peaceful, calm but beautiful feel in this scene, similar to the reference.
Today I sent DG some images of effects that I was thinking about for the Desolate lava locations. I think that a more subtle approach would be better as there is a lot going on in some very quick scene's.
I also had a look at some video tutorials for various effects and although I might not do exactly what is shown because they are very realistic, I feel I got enough information to work off.