POLAR BEAR: An extinction crisis

Due to massive global warming around the world polar bear are starving to death. Mostly polar bears make seals their prey but because of melting sea ice, it is likely that more polar bears will soon starve, warns a new study that discovered the large carnivores need to eat 60 percent more than anyone had realized. Turns out they are high-energy beasts, burning through 12,325 calories a day—despite sitting around most of the time

polar bear mostly all seasons rely on calorie loaded diets. To minimize their excess energy consumption, they still hunt for hours by seals’ cone-shaped breathing holes in the sea ice. When a seal surfaces to breathe the bear stands on its hind legs and smacks it on the head with both of its front paws to stun it. Then the bear bites it on the neck and drags it onto the ice.

“They’re far more successful doing this than any other method of hunting”.That’s why melting of ice is most threatning for them.

Melting Of Ice Makes For Hungrier Bear

Climate change is heating up the Arctic faster than anywhere else, and sea ice is shrinking 14 percent per decade. Even today, in the middle of the bitter cold Arctic winter, satellites show there is about 770,000 square miles less sea ice than the 1981 to 2010 median (That’s an area larger than Alaska and California combined). In the late spring, the ice is breaking up sooner and forming later in the fall, forcing bears to burn huge amounts of energy walking or swimming long distances to get to any remaining ice. Or they stay on land longer, spending the summer and, increasingly, the fall fasting, living off their fat from the seals they caught in the spring.

The data showed the bears were active about 35 percent of the time and resting for the remainder, yet they burned through 12,325 calories a day, much of it from their body reserves. That’s about 60 percent more than previous studies had estimated. The videos revealed that four of the females weren’t able to catch a single seal. Measurements showed those animals lost 10 percent or more of their body mass.

One bear lost close to 44 pounds, including her lean muscle, in 10 days. This bear even leapt into the sea in a failed attempt to catch a seal swimming by. “She might have been desperate”.

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