Levinton's Marine Biology, Third Edition, is the most up-to-date text for the sophomore/junior/senior level marine biology for biology majors course. The text is characterized by its exceptionally clear and conversational writing style and its comprehensive coverage that presents organismal and ecosystem ecology topics from an evolutionary perspective. A hallmark feature of this text is its principles-driven approach, in which a particular organism and its habitat are discussed within the context of its fundamental biological processes - what they eat, who is the predator/prey, the organism's internal metabolism and its process of reproduction. The Third Edition has been thoroughly revised and is now more engaging, up-to-date, and accessible than ever. Of particular note, the revision features a new full-color illustration program. In addition, all of the chapters are updated and include the most important developments from the field. Finally, students will find new pedagogical aides to help them master and retain the information.