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.
Arctic- Polar bear on an iceberg in the Arctic. Their habitat is greatly threatened and shrinking daily. Those who deny climate change only need to learn about what is happening to the polar bears to understand.