3,000 feet
A polar bear uses its nose to smell the food. Polar bears can smell a seal up to 20 miles away.
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.
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 vast majority of a polar bear's diet is seals, which come up for air or are trapped away from holes in the ice.
A polar bear
they normally eat seals but in the summer the ice melts and the seals swim away and they eat seals only if they can catch them
a bear does not eat seals it eats fish unless it is a polar bear
because the seals are one of the main mammals in the area of the polar bear and they are easy to capture and they are not polar bears predators ( predators means where its the polar bears food not a polar bears eater)
seals are not friendly. like the polar bear they are unpredictable
The seals are eaten by polar bears
The polar bear is a tertiary consumer - third lever.