Narwhals are specialized Arctic cetaceans whose unique physiology and behavior make them particularly vulnerable to rapid Arctic climate change and human disturbance.
Narwhals are among the most physiologically specialized mammals on Earth, making them particularly vulnerable to environmental change. Their reliance on specific sea ice conditions and prey availability means that rapid Arctic warming disrupts the ecological relationships their life history evolved around. Narwhals responding to human disturbance show paradoxical physiological responses - slowing heart rate while simultaneously swimming fast from perceived threats - that places extraordinary cardiovascular strain. Ship strike risk is increasing as shipping routes open with sea ice loss. The welfare of individual narwhals in a rapidly changing Arctic depends on both mitigation of climate change and protection of critical habitats from disturbance, particularly during the sensitive summer aggregation period.