I love this image. It looks like something I would see watching the specials and cgi enhanced documentaries on the science, discovery, and animal planet channels about prehistoric creatures. *watches them obsesively when she knows they're on*
Looks really amazing.
Just a minor repair: aren't there too many fishes around, beeing a Nothosaur carnivorous?
Anyway, great job, I really like how you did all the shadows/highlights relation.