On behalf of the Editors, I am pleased to announce the publication of the new Encyclopedia of Marine Mammals, third edition, ed. by B. Würsig, J.G.M. Thewissen, and K. Kovacs, Elsevier/Academic Press, San Diego, CA. 2018. The book is now available for purchase in both print and eBook. For more information, including purchasing options, please visit: https://www.elsevier.com/books/encyclopedia-of-marine-mammals/wursig/978-0-1... The latest edition covers the ecology, behavior, conservation, evolution, form and function of whales, dolphins, seals, sea lions, manatees, dugongs, otters and polar bears. It 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 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. Enjoy, Sarah Sarah Piwetz Ph.D. Candidate Texas A&M University at Galveston Department of Marine Biology Marine Mammal Behavioral Ecology Group http://www.tamug.edu/mmbeg/