Wild Polar Bear Welfare and Sea Ice Loss

Polar bears are facing rapid habitat loss as sea ice declines due to climate change, forcing physiological stress, nutritional deprivation, and human conflict as bears spend longer periods ashore.

Key Facts

Arctic sea ice extent has declined by approximately 13 percent per decade since 1979
Polar bears require sea ice to hunt ringed seals, their primary prey
A polar bear that cannot find sufficient food may lose 1 kilogram of body weight per day
Pregnant females who cannot accumulate sufficient fat reserves may reabsorb fetuses or produce non-viable cubs
Human-bear conflict in communities like Churchill, Canada increases as bears spend more time ashore
The IUCN projects a 30 percent reduction in polar bear populations by 2050 under moderate climate scenarios
Polar bears can survive on land for months by entering a walking hibernation state to reduce metabolism

Welfare Considerations

Polar bear welfare is being systematically eroded by habitat loss. The physiological stress of extended fasting as ice-free seasons lengthen is documented in declining body condition scores across populations. Pregnant females unable to accumulate sufficient fat face the welfare harm of failed reproduction — the metabolic investment of pregnancy without the outcome of viable cubs. Bears forced into human settlements in search of food face harassment, rubber bullet deterrents, and the stress of intensive management. The cascade of welfare harms from sea ice loss — nutritional stress, failed reproduction, human conflict, and range compression — will intensify directly with the degree of warming, making climate action the most important polar bear welfare intervention.

What You Can Do

Support climate action as the single most impactful intervention for polar bear welfare
Donate to Polar Bears International which funds research and conservation programs
Support Churchill, Manitoba conservation programs that manage human-bear conflict humanely
Oppose Arctic oil and gas development that compounds sea ice loss with additional disturbance
Learn about polar bear ecology and advocate for climate action using their story