Diving is a natural experience and a recreational sport enjoyed by both young and old. Diving takes place abroad, but also year-round in our local waters. With the development of diving as a popular sport, many divers have developed a need for solid diving medicine knowledge. These divers seek easily understandable yet detailed information about the effects of diving on the human body. Diving medicine practitioners must assess whether safe diving is possible, competently treat diving accidents, and restore diving fitness when health issues arise that affect diving. The success of this work lies in its clear language, through which the complex relationships are conveyed by a variety of specialists. It is possible to read each chapter separately and repeatedly delve into a diving medicine topic. Reader-oriented content, practical case studies, clear tables, special notes, and educational illustrations are presented in an understandable manner. Modern diving medicine is now available in its third fully revised edition and has become the standard reference for all divers interested in diving medicine, which should not be missing from the library of dedicated divers, diving instructors, and diving physicians.