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Return to the Sea

The Life and Evolutionary Times of Marine Mammals

Annalisa Berta

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University of California Press img Link Publisher

Naturwissenschaften, Medizin, Informatik, Technik / Naturwissenschaften allgemein

Beschreibung

Return to the Sea portrays the life and evolutionary times of marine mammals—from giant whales and sea cows that originated 55 million years ago to the deep-diving elephant seals and clam-eating walruses of modern times. This fascinating account of the origin of various marine-mammal lineages—some extinct, others extant but threatened—is for the nonspecialist. Against a backdrop of geologic time and changing climates and geography, this volume takes evolution as its unifying principle to help us to understand today’s diversity of marine mammals and their responses to environmental challenges. Annalisa Berta explains current controversies and explores patterns of change now taking place, such as shifting food webs and predator-prey relationships, habitat degradation, global warming, and the effects of humans on marine-mammal communities.

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Schlagwörter

bioscience books, walruses, evolution, marine life history, extinct marine life, zoology, mammal evolution, humans and marine life, mammal zoology, predator and prey, climate change and animals, climate change and the ocean, history of the sea, marine history, marine mammal science, elephant seals, history of mammals, marine food webs, polar bears, oceanography books, marine evolution, evolutionary biologist, extinct mammals, natural history, marine species, whales and dolphins, global warming, marine biology students