How Strong Is a Polar Bear? Strong Enough to Crush a Seal's Skull

A polar bear's bite delivers 1,200 pounds of pressure per square inch. For reference, a human bite manages about 150 PSI. That difference matters when the bear is hunting seals — a single crushing bite to the skull ends it. But the bite is just the setup. Watch a polar bear hunt and the real strength reveal comes earlier: the moment it drags a half-ton seal carcass across sea ice as if moving a stuffed animal. A large male polar bear weighs around 900 to 1,600 pounds and can carry prey weighing several hundred pounds without hesitation. On land, nothing in the Arctic can match that raw pulling power. The strength extends to their paws. A polar bear can break through sea ice up to two and a half feet thick by striking it repeatedly — not with tools, just by slamming down hard enough to shatter it. Those same paws can swim up to 60 miles without rest, powered by forelimbs that evolved specifically for hauling the bear's enormous body through water and across frozen terrain. What makes the bear dangerous isn't one superpower but the combination. The bite seals the kill. The strength hauls the meal. The endurance gets them to the next seal, and the next. A polar bear hunts seals alone in one of Earth's harshest habitats, and everything about their body — muscle density, jaw leverage, claw length — is engineered for a single purpose: breaking through defenses and winning a fight against prey that would kill most animals instantly. The Arctic's apex predator doesn't need the fastest speed or the longest reach. It just needs to be unstoppable once it commits.