Marine mammals are among the most interesting and threatened species on Earth. This CD-ROM gives a complete overview of all sea mammals of the world with detailed full-colour drawings and spectacular underwater photographs as well as sound recordings for most species. Included also are an interactive identification key and distribution maps, and an illustrated glossary defining more than 250 scientific terms; the entire text is hyperlinked. Marine Mammals of the World is a must for teachers, whale and dolphin watchers, environmentalists, and ocean lovers everywhere.