One male polar bear, bony after a season without seal blubber, struggles along the slushy edge, haunches soaked, nearly slipping into the sea. We are on Gordon Point, in northern Manitoba ...

This story appears in the February 2019 issue of National Geographic magazine. Not too long ago ... and we were looking for seals and polar bears. NGM Maps When we anchored the boat at the fjord ...

If I hadn’t set free Tyler, the polar bear zero-gravity indicator, I might not have realized we were already weightless.” ...