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The weight of polar bears fluctuates during the year, as they can bulk up on fat and increase their mass by 50 percent. [31] A fattened, pregnant female can weigh as much as 500 kg (1,100 lb). [35] Adults may stand 130–160 cm (4.3–5.2 ft) tall at the shoulder. The tail is 76–126 mm (3.0–5.0 in) long. [10]
The Polar Bear Plunge event in Maryland is the largest polar bear plunge in the United States. It is held annually at Sandy Point State Park and raises funds for the Special Olympics. [ 42 ] Sponsored by the Maryland State Police , in 2007, Plungapalooza raised $2.2 million and had 7,400 participants. [ 43 ]
Marine mammals are aquatic mammals that rely on the ocean for their existence. They include animals such as sea lions, whales, dugongs, sea otters and polar bears. Like other aquatic mammals, they do not represent a biological grouping. [26] The humpback whale is a fully aquatic marine mammal.
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Despite the name, black bears are not always black and some populations are brown or even cinnamon-colored. Black bears are not closely related to brown (i.e. “grizzly”) bears or polar bears ...
Researchers tracked polar bears with GPS system collarsand recorded long-distance swims up to 354 kilometres (220 mi), with an average of 155 kilometres (96 mi), taking up to ten days. [89] A polar bear may swim underwater for up to three minutes to approach seals on shore or on ice floes while hunting. [90] [91]
A bull southern elephant seal is about 40% heavier than a male northern elephant seal (Mirounga angustirostris), which is nearly twice the weight of a male walrus (Odobenus rosmarus), [6] [7] or 6–7 times heavier than the largest living mostly terrestrial carnivorans, the Kodiak bear and the polar bear. [8] [9]
Polar bears take particular advantage of these situations and are able to locate the belugas using their sense of smell. 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 ...