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  1. Feb 01, 2019 · Marine mammals Marine mammal ecology. Marine mammals represent a variety of ecological roles, including herbivores (manatees), filter... Types of marine mammals. There are over 70 different species of cetacean. These carnivores use flippers to move both on... Threats and protection. Threats to ...

  2. Classification of extant species. Order Cetartiodactyla. Suborder Whippomorpha. Family Balaenidae ( right and bowhead whales), two genera and four species. Family Cetotheriidae (pygmy right whale), one species. Family Balaenopteridae (rorquals), two genera and eight species. Family Eschrichtiidae ( ...

  3. There are five groups of marine mammals: pinnipeds (or “flipper-footed” animals like seals, sea lions, fur seals and walruses), cetaceans (species that cannot survive on land, such as whales, dolphins and porpoises), sea otters (the smallest marine mammal), sirenians (warm water species such as dugongs and manatees) and polar bears (which depend on the ocean for a majority of their food).

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  5. Marine Mammals. Breadcrumb. Home. Themes. Marine mammals. Definition of Threatened and Endangered Marine Mammals: Some marine mammals face significant threats. The Endangered Species Act (ESA) aims to conserve endangered and threatened species and the ecosystems they depend on. Under the ESA, a species is considered endangered if it is in danger of extinction throughout all or a significant portion of its range, or threatened if it is likely to become endangered in the foreseeable future.

  6. List of Marine Mammal Species and Subspecies. Order Carnivora. Family Ursidae. Ursus maritimus Phipps, 1774. Polar bear. Family Mustelidae. Enhydra lutris (Linnaeus, 1758). Sea otter. E. l. kenyoni Wilson, 1991. Eastern sea otter; E. l. lutris (Linnaeus, 1758). Western sea otter; E. l. nereis (Merriam, 1904). Southern sea otter; Lontra felina (Molina, 1782). Chungungo, marine otter

    • Whales, Porpoises, and Dolphins. Beluga, Cook Inlet population. Delphinapterus leucas. Endangered. Beluga, Sakhalin Bay-Nikolaya Bay-Amur River stock.
    • Seals and Sea Lions. Bearded seal, Beringia distinct population segment (DPS) Erignathus barbatus. Threatened. Bearded seal, Okhotsk distinct population segment (DPS)
    • Manatees and Dugongs. Amazonian manatee. Trichechus inunguis. Endangered. Dugong. Dugong dugon. Depleted. West African manatee. Trichechus senegalensis.
    • Polar Bear. Polar bear. Ursus maritimus. Threatened.
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