Narwhals are among the most sensitive Arctic species to climate change and human disturbance. Their complex social lives and unique physiology make them vulnerable to rapidly shifting ocean conditions.
Narwhals experience welfare impacts from multiple converging stressors. Acoustic disturbance from ships and sonar causes stress responses measurable in glucocorticoid hormones, and can displace pods from critical feeding areas. Entanglement in fishing gear, though less common than for other whales, can cause prolonged suffering. Climate-driven sea ice loss exposes narwhals to increased killer whale predation, elevating chronic fear and injury risk. Research captures for tagging — essential for conservation science — must use rapid, low-stress protocols given narwhals' extreme susceptibility to capture myopathy. Bycatch during subsistence hunting affects pod cohesion. Protecting narwhal welfare requires reducing anthropogenic noise, managing shipping routes through critical habitat, and supporting Indigenous-led stewardship that incorporates both cultural practice and contemporary welfare science.