I have always said that underwater photography is not something a rational person should consider. It is expensive and at times very frustrating, but when you get some good results it rewards you with a great feeling of satisfaction. As someone who has persevered with underwater photography for nearly 15 years, I have bought many books on the subject in an attempt to learn why I keep making the same mistakes. Until reading Martin Edge's book I felt that only Howard Hall's book came close to showing me the answer. Martin has managed to produce a book that is not only interesting and easy to read but really gets the message over. He covers all the aspects you need to know about, without the commonly made mistake of getting tangled up in the technical & equipment issues. Sure he talks about the equipment, but the clear message is that you take the photograph...the equipment is just what you use to do it with.