Polar bears are among the most visible symbols of climate change impacts on wildlife, with sea ice loss directly threatening their hunting success, body condition, and cub survival.
Individual polar bears facing extended fasting periods due to sea ice loss experience chronic hunger stress, nutritional depletion, and in severe cases starvation. Cubs born to nutritionally stressed mothers are smaller and less likely to survive their first year. As ice-free seasons lengthen, bears spend more time on land where human-bear conflict increases and food alternatives are inadequate. Climate change mitigation is the only systemic solution to polar bear welfare deterioration — every fraction of a degree of warming prevented directly benefits individual bear lives.