Narwhals are enigmatic Arctic cetaceans whose unique tusk, extreme sensitivity to disturbance and dependence on sea ice make them one of the species most vulnerable to the compounding stressors of climate change and industrial development.
Research on narwhal stress physiology has revealed that these animals mount extreme fear responses to human disturbance — even brief exposure to vessels or activity triggers physiological responses that would be expected in extreme predator encounters. This hypersensitivity means that industrial development in their range, including shipping traffic, seismic surveys and resource extraction activities, causes repeated severe stress responses. Sea ice loss reduces habitat quality and forces changes in migration routes and foraging depth. The combination of physiological sensitivity to disturbance and climate-driven habitat change creates compounding welfare pressures on individuals in an increasingly industrialised Arctic.