River Dolphins and Larger Toothed Whales, Volume Three in Ridgway and Harrison's Handbook of Marine Mammals, consists of species review chapters written by global experts on brackish and freshwater dolphin species and larger toothed whales. Each chapter includes a description of the species that is followed by sections on distribution and abundance, anatomy, physiology, behavior, ecology, reproduction, parasites and diseases, and the impacts of human activities on the species. This series was founded to help scientists, conservationists, and informed laypersons alike find definitive reviews on all the world's living whales, dolphins, porpoises, seals, sea lions, sea cows, marine otters, and bears.Some of the world's most beautiful, intelligent, and highly adapted mammals inhabit our seas and oceans and have stirred the human imagination for many centuries. As our knowledge of marine mammals grows, the need exists for a reliable and complete reference to the ecology and biology of these fascinating creatures. This book addresses this important need. - Provides in-depth reviews of sperm whales, beaked whales, and narwhals - Addresses the evolution, anatomy, ecology, distribution, and behavior of these marine mammal species - Features numerous photos of live and specimen animals, skulls, and anatomical details, along with distribution maps