However, the Greenland shark also has poisonous skin that the bear may not enjoy. A polar bear would stand no chance against the quicker, stronger adult great white simply based upon the sharks greater size and advantage in its element. They generally don't hang out in the same places. read more
I would say the polar bear would win. If the bull shark gets the polar bear by the neck, the bear can use its claw to tear the bull shark apart. Eventually, the bull shark would let go of the bear’s neck and the bear would finish the shark. read more
The polar bear would defeat the tiger. Polar bears have more strength and weight than a tiger would ever attempt, since polar bears are much larger. read more