This book is aimed at anyone who is considering or beginning underwater photography, but also has the scope to help the more experienced photographer develop specific techniques, perfect particular subjects, and give advice on entering competitions and selling your work.The subjects covered by each chapter are designed to allow you to pick your entry level and then aid both the beginner or more experienced photographer to expand and hone their skills within each technique before moving onto the next.Photography underwater is potentially the most difficult of photographic disciplines, as most techniques that work well on the surface usually fail miserably underwater, and monitoring one's life support system, buoyancy and sea conditions complicate things even more. Using the step-by-step techniques helps the reader find all the information required for a particular technique presented in a relaxed and easy-to-grasp style.