Howard Hall's amazing underwater video
This is an amazing must see underwater video by Howard Hall showing fish, sharks, rays and so much more - called Ocean Requiem. It's an indictment of over-fishing and gill nets. Originally seen posted on wetpixel.com
Make sure you watch the entire video. It has a little of everything, macro, wide-angle, behavior, cold-water, warm water - all of it fantastic. I think he edited the video a few years ago.