Beautiful shots there. I believe Charles Mazel played a huge role advancing the influence of fluorescence. Though photography had uv tricks even before that matter. You'd be surprised how many types of lighting tricks can achieve dramatic results. Though with today's technology and software, an experienced graphic designer could obtain the same picture quality and look. I myself can't, but I've worked with a few of them that had clients ask them to make corals look that way. I'm talking way too much now, but anyhow... great photos!