This updated and revised second edition of John Heine's Scientific Diving Techniques covers the details of research methods underwater. Included are general scientific diving guidelines, an overview of aquatic habits and ecosystems, specialized diving equipment and procedures, locating and marking study sites, archaeology, measuring physical and biological factors, underwater experimentation and underwater photographing and videography for the scientist. There are over 500 references to original scientific techniques. Also included are training exercises to aid Diving Safety Officers in training scientific divers.

This is the first book on diving to progress beyond the beginner's stage. although open to the beginner, it will come into full use in the hands of the advanced performer and his coach. A careful balance is maintained between encouraging the instinctive response ("The truth of the matter is that good divers do the natural and correct thing -- despite coaching!") and encouraging the diver to act in accordance with basic physical principles that are instilled so deeply they become second nature to him.The author abjures the folklore of traditional diving instruction in favor of an approach solidly based on the science of mechanics. Such concepts as the moment of inertia and the conservation of angular momentum are simply and graphically explained. This is by no means empty scientific bravado -- in giving the diver a genuine knowledge of why certain motions produce certain results, the book will impart more confidence than a mere set of precepts telling him what to do.All the main groups of dives are covered in separate chapters. The "saving of dives," an essential development of modern diving, is treated, and there is a chapter on the judging of diving. The book is profusely illustrated with drawings and photographs, including for the first time stroboscopic movie action shots (each frame at 1/100,000 of a second) of current National and Olympic champions.

Underwater Research is primarily a review of problems in underwater viewing and hearing and acoustics. The chapters in this book are papers collated from the symposia of the Underwater Association. This book explores the need for the further study of the physiological and psychological reactions of divers. The book also concludes that diving is still the best way in studying the benthic ecology and sunken wrecks and cities. The text is divided into 25 detailed chapters. Most of the topics in the text address the common problems encountered by divers such as in hearing and viewing. Specifically, problems in diver communication, depth estimation, color distinction are some of the topics covered. Other chapters deal with the psychological reactions such as anxiety, narcosis, and visual attention. Also, some chapters tackle solutions and experiments for the improvement of diving techniques and equipment. This reference is helpful to divers, students, and scientists involved in marine and environmental science.