Narwhals are uniquely vulnerable to climate change because of their extreme specialisation to Arctic sea ice environments, with welfare consequences from habitat loss, ship strikes, and entanglement.
Narwhals present a fascinating welfare paradox: they show extreme physiological stress responses (massive heart rate increases) combined with behavioural freezing (cessation of movement) when disturbed. This response — diving rapidly while holding breath rather than swimming away — is adaptive for avoiding natural predators but maladaptive around boats, creating severe cardiovascular stress. As Arctic shipping traffic increases with reduced sea ice, narwhal populations face repeated high-stress encounters with vessels. Climate change is also shifting prey fish distribution, requiring narwhals to alter deep-diving foraging strategies and expend more energy. Welfare-conscious Arctic policy includes buffer zones around narwhal migration corridors and speed restrictions for vessels in key areas.