A fascinating 10 minute short film. Hat tip to KaylinQ. Info from the youtube account:
Dir. Roger Teich / USA / 2004
Ron Elliott is the only sea urchin diver at the Farallon Islands off the coast of Northern California, where he shares the water with big Great White Sharks, which is just the way he likes it. This is a documentary of his experiences, in a combination of stunning black & white and underwater, color photography.