According to about every other site that mentioned the story, the whole website is a joke (as in, not real or serious).
Quote:
Antarctica offers more than 5.4 million square miles of glacial habitat and a variety of food sources for the polar bear: emperor, adelie, rockhopper, chinstrap and gentoo penguins; leopard, fur, weddell and elephant seals; and humpback, minke, blue and orca whales.
Bears hunting orca whales... sounds like a legitimate story alright.