tags: Polar Bear Versus Walrus Colony, nature, global warming, climate change, BBC, Planet Earth, documentary, streaming video This video documents an awesome fight for survival as a grown male polar bear takes on a walrus colony at the edge of the Arctic circle. This was a truly epic battle, phenomenally captured in high quality, from the BBC natural history masterpiece, Planet Earth. What surprised you most about this footage? I was surprised that the walruses did not work together to defeat/get rid of the polar bear.