Polar bears (Ursus maritimus) are exclusive to the Arctic. They do not exist in Antarctica.
| Arctic | Antarctic |
|---|---|
| Apex predator: Polar bear | Apex predator: Leopard seal, Orca |
| Prey: Ringed/bearded seals on ice | Prey: Penguins, fish, krill (marine) |
| Land predators: Arctic fox, wolf | Land predators: None (only microbes, invertebrates) |
People associate both poles with "ice and snow" and assume similar fauna. In reality, penguins are Antarctic/Southern Hemisphere; polar bears are Arctic/Northern Hemisphere. They never meet.
Polar bears are Vulnerable (IUCN) due to sea-ice loss from climate change. Antarctic wildlife faces different threats (krill fishing, warming oceans, invasive species).