Polar Bear

I spent a good deal of last night's dream trying hard not to be eaten by a polar bear.   

I'm not sure what I was doing in a kind of very large, empty concrete swimming pool.  It had a kind of mountain/island that was difficult for the polar bear to climb.  At one point I helped someone into a hovering helicopter while the polar bear chomped at my feet.  Then I spent a lot of time sort of holding the bear's muzzle open (so it wouldn't bite down on me).