Authoritative text, detailed illustrations, and a systematic approach make DK's "Smithsonian Handbook of Whales, Dolphins, and Porpoises" the most comprehensive and concise pocket guide to cetaceans. With more than 900 illustrations, this visual recognition guide is designed to make identification as simple and accurate as possible.This book is one of a series covering plants, animals, and other natural phenomena from around the world and is published in association with the Smithsonian Institution.