This pioneering new volume of underwater photography reveals the coral reefs of the world as you have never seen them before, through revolutionary natural-light filter photography and a marine biologist's revelatory understanding of reef life behaviour. A marine scientist by training, Alex Mustard captures the natural behaviour of marine life that many divers miss. In this remarkable volume, he unveils a life-long fascination with the real lives of reef animals. Perpetually surprising, the unique images range from reefs from all around the world, including the Red Sea, Indian Ocean, Pacific, South-east Asia, Caribbean. To his peers, Alex Mustard's name has become synonymous with the new digital techniques that he has developed, and he leads the way in the use of filters in available light shooting and shooting telephoto lenses underwater.