[Ditter]

I'm confused. In northern climes, I have seen plenty of seals when there wasn't any ice. Also other kinds of bears hibernate in the winter, when they come out of hibernation in the late spring, they are very thin. You are saying that polar bears do the opposite?

[the bottle let me down]

In northern climes, I have seen plenty of seals when there wasn't any ice.

The problem is that when there is no ice, the seal swims away and the bear can't catch it. When the water is frozen over, the bear can ambush the seal by waiting near its air hole. After all, the seal has to come up for air sometime.