- Grim evidence of the effects of climate change are emerging in Canada, with scientists reporting more cases of cannibalism among polar bears.
Male polar bears are resorting to eating cubs as their seal hunting grounds disappear.
Tourists often take excursions to northern Manitoba for a first hand look at polar bears.
But one group recently experienced a horrifying sight as a male bear separated a cub from its mother, then killed and ate it.
Scientists say there have been at least eight cases of polar bears eating cubs this year and that the cubs are being killed for food.
The Hudson Bay sea ice, which the bears use to hunt for seals so they can fatten up for winter, is not appearing until weeks later than usual.
Conservationists say it means the bears have to survive on land for longer on their diminishing fat reserves and can lose up to 30 per cent of their body mass.
And this year it could be an even longer wait, as forecasters say the region will experience above average temperatures for at least another week.
