The _Encyclopedia of Marine Mammals_, Third Edition covers the ecology, behavior, conservation, evolution, form and function of whales, dolphins, seals, sea lions, manatees, dugongs, otters and polar bears. This edition provides new content on anthropogenic concerns, latest information on emerging threats such as ocean noise, and impacts of climate change. With authors and editors who are world experts, this new edition is a critical resource for all who are interested in marine mammals, especially upper level undergraduate and graduate students, researchers, and managers, and is a top reference for those in related fields, from oceanographers to environmental scientists. * Significant content and topic updates, as well as the addition of new topics in such areas as anthropogenic disturbance * Visual maps of the oceans and seas mentioned in contributions, helping to place the geographical features described in the text with clear, consistent species illustrations * Written to help users learn new information or brush up on a topic quickly, with the references at the end of each entry to help guide readers into more specialist literature