Humpback whales have partially recovered from commercial whaling but face ongoing welfare threats from entanglement, vessel strikes, and acoustic pollution.
Entangled humpbacks carry the weight of ropes and fishing gear for weeks to months before death from exhaustion, starvation, or drowning. The suffering of entangled whales is prolonged and severe, with animals showing clear distress behaviors including thrashing, altered surfacing patterns, and dramatic weight loss before mortality. Vessel strike trauma causes sudden death or devastating injuries from propeller lacerations. Acoustic pollution that masks the complex humpback songs used for mating and mother-calf communication causes social disruption and reproductive failure affecting multiple generations. Whale disentanglement teams provide direct welfare intervention but can only respond to a fraction of entanglements that are reported.