Marine Mammals of the World, 3rd Edition describes and illustrates newly discovered and rarely photographed species, making it the most comprehensive and up-to-date identification guide to all the marine mammal species of the world. This latest edition continues to meet the research-focused needs of marine biologists, conservation biologists, and students, as well as weekend whale-watchers and community scientists, by providing an unmatched collection of new illustrations and photos, taking advantage of advances in digital and drone photography. This guide describes the identification features, global distribution, and basic biology of all the extant and recently extinct marine mammal species, including cetaceans, sirenians, pinnipeds, and other marine carnivores. Marine Mammals of the World, 3rd Edition is a vital resource for marine biologists and ecologists, as well as wildlife managers, conservation and comparative biologists and physiologists.