Wild Polar Bear Sea Ice Dependence

Polar bears are uniquely dependent on sea ice for hunting, breeding, and resting. Rapid Arctic warming is reducing sea ice extent and duration, causing measurable declines in polar bear body condition and welfare.

Key Facts

Polar bears rely on sea ice as a platform to hunt ringed seals, their primary prey
Sea ice in the Arctic has declined by roughly 13% per decade since satellite records began in 1979
Bears that cannot access sea ice during summer must fast, drawing down fat reserves
Prolonged fasting in pregnant females reduces cub birth weight and survival rates
Some subpopulations of polar bears have declined by over 30% in recent decades
Bears venturing into human settlements due to food stress face lethal control and welfare harms
Climate models project near-total loss of summer sea ice by mid-century under high emissions scenarios

Welfare Considerations

Polar bear welfare is directly tied to sea ice, and the rapid decline of that habitat represents one of the clearest examples of climate change causing measurable animal suffering now, not in the abstract future. Bears that cannot hunt adequately experience prolonged hunger, muscle wasting, and reproductive failure. Mothers with reduced fat reserves produce smaller, less viable cubs. Individuals that wander into human settlements seeking food face hazing or lethal control. These are individual animals experiencing real suffering as a consequence of global greenhouse gas emissions. Addressing climate change is therefore the most direct intervention available to improve polar bear welfare at scale.

What You Can Do

Reduce your carbon footprint through energy, diet, and transport choices
Support climate advocacy organizations working for rapid emissions reductions
Oppose new fossil fuel development in or near Arctic polar bear habitat
Support polar bear monitoring programs that track body condition and population health
Learn about the connection between climate change and Arctic wildlife welfare