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“POLAR BEARS” Polar bears are at the top of the food chain and have an important role in the overall health of the marine environment . Over thousands of years, polar bears have also been an important part of the cultures and economies of Arctic peoples . Polar bears depend on sea ice for their existence and are directly impacted by climate change — serving as an important indicator species . How does climate change affect polar bears so dramatically? Polar Bear Specialist Group show that they are in decline and that there is a high estimated risk of future decline due to climate change . As their sea ice habitat shrinks from climate change, skinnier and hungrier polar bears face a grave challenge to their survival . Polar bears rely on sea ice to access the seals that are their primary source of food as well as to rest and breed . With less sea ice every year, polar bears and many other ice - dependent creatures are at risk . In most areas, th