The "Polar Bears Are Dying" myth explained:

There's ~20 polar bear "regions" or "Subpopulations" scientists keep track of. At any given time? Roughly 1/3 are declining, 1/3 stable and 1/3 increasing. This is perfectly natural and normal. As long as we've studied them, this is how polar bear (and almost every wild animal population) works.

Alarmists take the 1/3 that are declining and SCREAM about it. Then, 2 years later when those regions are actually increasing again? They simply take different regions and SCREAM about those!

Another fact: The worst year ever for Western Hudson Bay polar bears (where I live!) was when it was a brutally cold spring. They couldn't get out to the open water to hunt because the pack ice stayed until June. Almost all the babies died (they are born in winter while Mom hibernates, eh?) and nearly half the adults. 3 years of good weather later & their population rebounded completely.
Cold kills bears, not warming. They can swim for 50 miles away from shore with no ice at all to find food. Ice makes it easier, but isn't essential.