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A polar bear travels submerged under water - a tactic often employed to surprise prey. As part of a fragile Arctic ecosystem, the bears are threatened by the recent dramatic reduction in ice cover. Sea ice - frozen seawater that moves with the ocean currents - provides an important habitat and resting place for many animals. The Artic ice cover reached a record low in 2007. Many attribute this situation to global warming.

from Mail Online

PICTURED: Polar bears floating past the Houses of Parliament

PICTURED: Polar bears floating past the Houses of Parliament | Daily Mail Online

With ivory tusks up to 8 feet long, a pod of male narwhals, known to some as unicorns of the sea, breath before heading back under the ice to gorge on polar cod. Algae and plankton grow on the underside of the sea ice, copepods and amphipods feed on the plankton, cod feed on the amphipods, narwhals feed on the cod and polar bears occasionally feed on narwhals. So goes the cycle of life in the Arctic.

from All That Is Interesting

Photo Of The Day: An Emaciated Polar Bear Reveals Its Species’ Grim Future

Many people want to eat more and more when there are people who eat millions of food every day. Why is there people who get over fed when there are some creatures like the polar bears who are starting to starve.

You can learn all about Polar Bears, the Arctic ecosystem, climate change, and what you can do to reduce your impact on the environment at the Assiniboine Park Zoo in Winnipeg, Manitoba.

from Live Science

Body Clock of Arctic Reindeer Ticks Differently

Reindeer are adapted to the chilly climes of the Arctic tundra, including Scandinavia . As they sport hollow hairs that air and act as insulation.

David Liittschwager - 2008 Photo Contest | World Press Photo

Xiaoqun Zheng - 2013 Photo Contest | World Press Photo

Steve Winter - 2014 Photo Contest | World Press Photo

Animal feet from below, mostly in zoos throughout Germany, Austria and Switzerland.