Who would win in a fight between an elephant and a polar bear?

It is highly likely that the elephant would win the fight. Elephants have thick, defensive hide and tons of muscles to protect itself from claws and teeth, which would make it not get injured by the polar bear. The strong muscles of the elephant's head is good enough to kill the polar bear whenever it hits the polar bear. If the elephant has sharp tusks, it would definitely win by goring the polar bear to death. A cow elephant or a bull elephant can crush a polar bear to death.