Humpback whale populations have recovered dramatically since commercial whaling ended, but entanglement in fishing gear, vessel strikes, and acoustic disturbance continue to cause significant individual welfare harms.
Humpback whale welfare post-recovery is a story of reduced but persistent human-caused harms affecting individually known animals. Entanglement in lobster pot lines and other fishing gear causes injuries ranging from brief encounters to prolonged entanglement lasting months — with ropes cutting through blubber and muscle as animals grow or struggle. Entangled humpbacks have been observed swimming in distress for extended periods before dying or being disentangled by response teams. Vessel strikes cause acute trauma; spinal injuries impair diving and swimming. Noise pollution from shipping affects the complex communication and feeding echolocation of animals known to have long-term social relationships. Individual welfare harms to these well-studied, long-lived animals with distinctive personalities represent both ethical concerns and conservation priorities.