Polar bears are a species of carnivorous bear that live in the Arctic. They weigh between 150-1000 kg as adults and feed on animals like walruses, beluga whales, and seals. Polar bear cubs stay with their mothers for over 20 months, learning to hunt and survive. Global warming has negatively impacted polar bear populations by reducing sea ice for hunting and travel, causing food scarcity and dangerous conditions for swimming between ice platforms.