Narwhals are uniquely adapted Arctic cetaceans facing welfare threats from sea ice loss, entanglement, and increased shipping in their traditional habitat.
Narwhals caught in sea ice entrapment events suffocate as breathing holes close, causing mass mortality. Sea ice loss, while reducing entrapment risk, eliminates the habitat structure narwhals rely on for predator avoidance. Increased shipping causes acoustic disruption to a species highly dependent on sound for navigation and communication. Stress from human approach causes cardiac responses more severe than in other cetaceans.