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  • Seymour Sullivan posted an update in the group Group logo of Fact a Day 2022Fact a Day 2022 2 months, 1 week ago

    I’m posting ahead for a couple of days. This is for 9/27
    Marine Mammals conclusion: Marine mammals were first hunted by aboriginal peoples for food and other resources. Many were also targets for commercial industry, leading to a sharp decline in all populations of exploited species, such as whales and seals. Commercial hunting led to the extinction of Steller’s sea cow, sea mink, Japanese sea lion and the Caribbean monk seal.
    After commercial hunting ended, some species, such as the gray whale and northern elephant seal, have rebounded in numbers; conversely, other species, such as the North Atlantic right whale, are critically endangered.
    Other than hunting, marine mammals can be killed as bycatch from fisheries, where they become entangled in fixed netting and drown or starve. Increased ocean traffic causes collisions between fast ocean vessels and large marine mammals. Habitat degradation also threatens marine mammals and their ability to find and catch food. Noise pollution, for example, may adversely affect echolocating mammals, and the ongoing effects of global warming degrade Arctic environments. Pictured is the Sea Mink, recently extinct, which used to inhabit the Gulf of Maine.

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