This book investigates the biology, behavior, and conservation of dolphins and porpoises. Richard N. Ellis, a renowned marine mammal artist and author, draws upon extensive research and his own observations to present a comprehensive overview of these fascinating cetaceans. The work details their evolutionary history, diverse species, social structures, and the threats they face in the modern world, advocating for their protection.

This work is recognized for its detailed and accessible presentation of information on dolphins and porpoises, making it a valuable resource for both general readers and those with a specific interest in marine biology. Ellis's expertise, combined with his artistic contributions, offers a unique perspective on the subject. The book is noted for its comprehensive scope, covering a wide range of topics from species identification to conservation issues.