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A humpback whale (Megaptera novaeangliae) A leopard seal (Hydrurga leptonyx). 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.
Polar bears rely on seals and fish as their primary food source. While the bears can hunt land mammals such as caribou and fox, they can survive off of land prey for only approximately 6 months. Without the abundance of sea ice, polar bears cannot access seals and fish and, thus, can starve. [17]
Polar bears rely on raw power when trying to kill their prey, and will employ bites and paw swipes. [96] They have the strength to pull a mid-sized seal out of the water or haul a beluga carcass for quite some distance. [114] Polar bears only occasionally store food for later—burying it under snow—and only in the short term. [115]
The polar bear is a major predator of Arctic seals and walruses, particularly pups. Bears may seek out seals, or simply wait for them to come by. Other terrestrial predators include cougars, brown hyenas and various species of canids, which mostly target the young. [104] Orca hunting a Weddell seal
The polar bear is the most carnivorous of bears due to the arctic climate in which it lives, and shows a preference for eating seals. The giant panda is the most herbivorous bear and has evolved a number of adaptations, including a sixth "toe", specialized teeth, and strong jaw muscles, to allow it to feed nearly exclusively on bamboo , a tough ...
Inuit hunters most often hunt juvenile whales which, compared to adults, are safer to hunt and have tastier skin. Ringed seal and bearded seal are the most crucial aspect of an Inuit diet and often make up the largest part of an Inuk hunter's diet. [3] Land mammals such as reindeer (caribou), polar bear, and muskox; Birds and their eggs
The bears swipe at the belugas and drag them onto the ice to eat them. [34] They are able to capture large individuals in this way; in one documented incident, a bear weighing between 150 and 180 kg was able to capture a beluga that weighed 935 kg. [171] Killer whales hunt and eat both young and adult belugas. [34]
Arctic ringed seals inhabit the Arctic Ocean, and are the most abundant and wide-ranging seal in the Northern Hemisphere. The ringed seal species is the smallest true seal, and gets its name from a distinctive patterning of light spots on dark grey colored fur. The ringed seal is commonly preyed upon by Polar bears, Arctic foxes, and Killer whales.