University of Florida scientists David and Melba Caldwell devote their book to one of the most interesting species of marine mammals - the bottlenose dolphin, or bottlenose dolphin. They describe the principles of the echolocation system of dolphins, focusing on the communication (communication) of animals among themselves. The main advantage of the book is a detailed description of the behavior of dolphins and their relationships with each other both in natural groups and in captivity. The authors cite sketches from the life of these animals, making these creatures friendly to us fall in love even more. For a wide range of readers.