Beluga whales are highly social Arctic cetaceans facing threats from noise pollution, climate change, and habitat loss. Their complex communication and social bonds make welfare disruption especially significant.
Beluga whales are highly intelligent, socially complex animals for whom acoustic communication is central to welfare. Noise pollution — including from shipping, oil exploration, and military sonar — disrupts their ability to communicate, navigate, and maintain social bonds. Chronic noise exposure causes physiological stress responses. The St Lawrence beluga population carries high loads of toxic contaminants including PCBs, PAHs, and pesticides absorbed through their prey, causing immune suppression, reproductive failure, and cancer. Captive belugas are known to suffer in small tanks, unable to express their full range of natural behaviours. Conservation requires reducing both acoustic and chemical pollution while protecting key migratory corridors from industrial development.