From fundamental principles of photographing marine life to making a living selling underwater photographs, this guide provides a wealth of practical advice, sure-fire strategies and tested tips for taking extraordinary photographs of elusive underwater subjects. Written by two top photographers who specialize in marine photography, this illustrated field guide provides no-nonsense information on topics such as taking available-light photographs, silhouettes, marine wildlife portraits, close-focus wide angle photographs and extension tube photographs to name just a few. Readers will also find proven guidance for purchasing underwater photographic equipment, taking photos of shipwrecks, and repairing and maintaining field equipment. Full-colour photographs demonstrate the authors' successful techniques in action.