W &ML...great photo and wonderful painting. Now I know wasn't hallucinating when I was startled to see the green flash some years ago from the rocks at Sea Grape. I've only seen it once but I've always looked for it since. I've heard that you only can see it when there are absolutely no clouds between you and the horizon. As the sun hits the perfect angle to your eye the light streams through the top few feet of water like a prism for a split second.