Narwhals are among the most ice-dependent cetaceans, and rapid Arctic climate change is disrupting their traditional migratory routes, foraging behavior, and acoustic environment in ways that create novel welfare challenges.
Narwhal welfare is shaped by a rapidly changing Arctic environment that is outpacing these animals' evolutionary capacity to adapt. Narwhals' specialization for dense pack ice environments — both as habitat and as protection from orca predators — means that the rapid reduction of sea ice creates conditions that their behavioral repertoire is not prepared for. Savsat entrapment events, where sea ice closes over traditional breathing areas, cause mass drowning deaths. Increased orca predation following killer whale range expansion into ice-free Arctic waters creates novel predation pressure on populations that evolved without this threat. Noise pollution from expanding Arctic shipping disrupts the acoustic communication that narwhals depend on for social coordination and navigation. These are welfare harms at the individual level — animals experiencing fear, entrapment, and injury — that aggregate into population-level declines.