With their keen sense of smell, polar bears can detect prey from as far away as 20 miles, even through snow or ice that is six feet thick. See the related link below.
the averrage is about 2km but some beer can more 5km
2 miles a way
Not nearly as far as they can smell. They may have relatively poor eyesight, but their keen noses are the most sensitive of any land animal. A polar bear can smell blood from miles away in subfreezing air temperatures.
Reports say that a polar bear can smell a seal over a mile away. That's on top of the ice, not under it. Bears can't smell seals that are under water.
A bear's sense of smell is incredibly acute. Polar bears have been known to smell seals as far as 30 km away! Among land animals, a bear arguably has the keenest sense of smell.
The dog has the best sense of smell.
A well-known native American axiom has it that "If a tree falls in the forest, the hawk will see it and the deer will hear it; but the bear... the bear will smell it."
if you have your period the bear will smell it. SO BE AWARE!!!!!!!!!!!!!!!!!!!!!!
it can smell as far as 16 yards away
They can easily smell a whale carcass 20 miles away or seals up to 6' beneath the snow and ice. This will depend on whether the animal is dead, which way the wind is going, if it is under the ice, if the polar bear can smell well, etc.
The polar bear is the only mammal in North America that will actively hunt human beings. A Polar Bear can take a human head off with a single blow of its paw. Polar bears have very sensitive noses and can smell blood as far as 20 miles away.
a bear nose is very strong it can smell from 200 meters away