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By John E. Reynolds III;Sentiel A. Rommel

Booklet by means of John E. Reynolds III, Sentiel A. Rommel

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The other carnivorous marine mammals resemble terrestrial mammals more than the pinnipeds. , brown [Ursus arctos] and black bears [Ursus americanus]). , lacking a shoulder hump, having small ears and head, and possessing a long neck) (see Figs. 1-3 and 1-4), and arctic habitat. The mustelid representatives (Tables 1-1 and 1-4) are the sea otter (Enhydra lutris), found along the Pacific coast of North America and Russia, and the marine otter (Lutra felina) from coastal waters of Chile and Peru. There are three subspecies of sea otter recognized (Wilson et al.

Most chapters consider topics one would expect in a biology textbook, including functional morphology, physiology, sensory biology, energetics, reproduction, communication, behavior and ecology. A chapter that is perhaps less typical, but which is very useful for students to understand marine mammal biology, is the final chapter on toxicants and their possible effects on marine mammal health. Chapters have been written so that they may either stand alone or be used as a part of a coherent whole.

Gracilis is found in the western north Pacific from the Kamchatka Peninsula through the Kuril Islands; E. l. lutris exists in the Commander Islands, the Aleutian Islands, and throughout central and southeastern coastal Alaskan waters; and E. l. nereis primarily occupies waters off central California (sensu Jefferson et al. 1993), but note that Reeves et al. (1992) use a somewhat different nomenclature. 5 m in length and weighing up to 45 kg), is characterized by extremely dense underfur, with sparse guard hairs, flattened hind feet for propulsion in water, retractile claws on the front feet only, lack of functional anal scent glands, a loose, axillary flap of skin to hold or store food and tools, posterior cheek teeth that lack cutting edges, a small pinna, and a horizontally flattened tail (see Figs.

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