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The polar bear (Ursus maritimus) is a large bear native to the Arctic and nearby areas. It is closely related to the brown bear, and the two species can interbreed.The polar bear is the largest extant species of bear and land carnivore, with adult males weighing 300–800 kg (660–1,760 lb).
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 ]
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.
The ulna is estimated to have been 48.5 cm (19 in) long when complete- for comparison, modern subadult polar bear ulnae are 36–43 cm (14–17 in) long. [1] The ulna was dated to the early Weichselian of the Late Pleistocene (~70kya). [2] Of the 16 specimens identified as Pleistocene polar bears, this is the only fossil ascribed to this ...
He attracted worldwide attention for his daily plunge in the Mohawk River, even when the thermometer hit −23 °F (−31 °C), earning him the nickname "the human polar bear". [22] The Coney Island Polar Bears club in the water on December 22, 2013. The oldest ice swimming club in the United States is the Coney Island Polar Bear Club of Coney ...
The Martha’s Vineyard Polar Bears group was founded in 1946 as a safe space for Black swimmers and now people go there every summer to exercise in the cold waters.
is the distance over which the initial time is achieved D 2 {\displaystyle D_{2}} is the distance for which the time is to be predicted Riegel expanded on his thesis in a 1981 article for American Scientist , stating that the formula t = a x b {\displaystyle t=ax^{b}} concerns activities in the "endurance range", namely lasting between 3.5 and ...
The sail area-displacement ratio (SA/D) is a calculation used to express how much sail a boat carries relative to its weight. [1]/ = [() /] = () In the first equation, the denominator in pounds is divided by 64 to convert it to cubic feet (because 1 cubic foot of salt water weights 64 pounds).