WALKER'S MARINE MAMMALS OF THE WORLD

This reference work contains entries on the known species of marine mammals, encompassing the pinnipedia, cetacea, and sirenia (seals, whales, dolphins, manatees, and the like) as well as the polar bear, the marine otter, and the sea otter. Each individual species is provided with its own entry, containing information on classification and classification history, morphology, range and habitat, and behavior. A fairly lengthy introduction provides more general information.