Polar bears are facing an existential welfare crisis as climate change reduces the sea ice they depend on for hunting, reproduction, and travel.
Individual polar bears experiencing extended ice-free periods lose condition through forced fasting, causing measurable stress biomarker elevation and reduced reproductive success. Mothers with cubs face the most severe welfare impact as their fat reserves must support both their own survival and cub nursing through progressively longer fasting periods. Polar bears forced onto land scavenge for food near human settlements, increasing conflict and likelihood of lethal removal. Subpopulations currently declining will face increasing individual welfare harm as conditions worsen. The welfare of polar bears is thus directly tied to global climate policy in a way that makes individual conservation interventions insufficient without systemic emissions reduction.