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  2. en.wikipedia.org › wiki › Marine_mammalMarine mammal - Wikipedia

    Marine mammals are mammals that rely on marine (saltwater) ecosystems for their existence. They include animals such as cetaceans (whales, dolphins and porpoises), pinnipeds (seals, sea lions and walruses), sirenians (manatees and dugongs), sea otters and polar bears.

  3. www.whalefacts.org › what-is-a-marine-mammalWhat Is A Marine Mammal? | Definition and Characteristics

    • Marine Mammal Characteristics
    • The Distinct Types of Marine Mammals
    • Marine Mammals and The Ecosystem

    While land mammals are similar in many ways, marine mammals have adapted to deal with living in environments that are generally surrounded by water rather than being elusively surrounded by land, and the way marine mammals live, hunt for food, and navigate the world is largely dependent upon their oceanic environment and physical characteristics. F...

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    In terms of the various marine mammal species, there are several distinct groups of marine mammals; sirenians (manatees and dugongs), cetaceans (whales, dolphins, and porpoises), fissipeds, sea otters, pinnipeds (seals, fur seals, sea lions, and walruses) and (as considered by some researchers and biologists) polar bears. Both cetaceansand sirenian...

    See full list on whalefacts.org

    When it comes to survival and the food chain, marine mammals play a large role in maintaining a healthy marine ecosystem; however, since around 20% – 30% are considered endangered and/or threatened, it raises some concerns on the impact of aquatic life and the impact humans have played in contributing to its condition. The elimination of one specie...

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  4. Images

    • Marine mammals | National Oceanic and Atmospheric Administration
    • Marine mammals
    • Marine Mammals List - Pets Lovers

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  5. www.ifaw.org › journal › what-is-marine-mammalWhat Is A Marine Mammal? A Complete Guide - IFAW

    • Baleen whales (suborder Mysticeti) A North Atlantic right whale with mouth open to show baleen. Photo: © Nick Hawkins.
    • Toothed whales (suborder Odontoceti) A harbor porpoise spotted just off the Grand Manan Island in the Bay of Fundy, Canada. Photo: Ari Friedlaender / © IFAW.
    • Sea cows (Sirenia) Dugong swimming underwater.
    • Pinnipeds. A juvenile harbor seal resting on a jetty. Photo: Andrea Spence / © IFAW.

  6. www.noaa.gov › marine-life › marine-mammalsMarine mammals - National Oceanic and Atmospheric Administration

    Feb 1, 2019 · Marine mammals are found in marine ecosystems around the globe. They are a diverse group of mammals with unique physical adaptations that allow them to thrive in the marine environment with extreme temperatures, depths, pressure, and darkness.

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  8. www.whoi.edu › ocean-life › marine-mammalsMarine Mammals - Woods Hole Oceanographic Institution

    Dec 1, 2020 · What are marine mammals? Marine mammals are warm-blooded vertebrates (animals with a backbone) that bear live young and nourish them with milk as land mammals do, but that spend most or all of their lives in the ocean.

  9. www.marinebio.org › marine-mammalsMarine Mammals - MarineBio Conservation Society

    Description & Behavior. Marine mammals evolved from their land dwelling ancestors over time by developing adaptations to life in the water. To aid swimming, the body has become streamlined and the number of body projections has been reduced. The ears have shrunk to small holes in size and shape.

  10. nmmf.org › education-outreach › all-about-marine-mammalsAll about Marine Mammals! - National Marine Mammal Foundation

    What is MARINE MAMMAL? Marine mammals are a diverse grouping of animals that all depend on the sea for their existence. Although they are all classified as mammals, they are not necessarily directly related by an immediate common ancestor and…