Wild Humpback Whale Entanglement and Rescue

Entanglement in fishing gear is a leading cause of injury and death in humpback whales globally, causing prolonged suffering and requiring skilled rescue teams to safely free affected animals.

Key Facts

Humpback whales are entangled in fishing gear at rates of approximately 50-75% over their lifetimes in some populations
Entanglement in rope and netting causes drag that exhausts whales, causes deep wounds, and can ultimately lead to drowning
Ghost gear — lost or abandoned fishing equipment — continues to trap marine animals long after being lost
An estimated 300,000 cetaceans die annually from entanglement globally across all species
Humpback whale populations have recovered substantially since the end of commercial whaling but entanglement undermines this recovery
Disentanglement is highly skilled and dangerous work — teams use knives on long poles from small boats while avoiding whale flukes
Some whales require multiple rescue attempts over days or weeks as they are found and lost in remote ocean areas
Whale lines that break under a set force (weak links) reduce entanglement duration and severity significantly
Ropeless fishing gear using acoustic releases is a developing technology that could eliminate vertical lines in whale habitat
NOAA and the International Whaling Commission coordinate global entanglement response and prevention programmes

Welfare Considerations

Entanglement causes profound and prolonged suffering. Ropes cutting into blubber and muscle over weeks or months create deep infected wounds that cause constant pain. The additional drag of attached gear prevents normal feeding and migration, causing starvation alongside physical injury. Animals that are successfully disentangled often show healing and return to normal behaviour, demonstrating that intervention genuinely reduces suffering. Prevention through fishing gear modification is a more scalable solution than rescue alone.

What You Can Do

Support NOAA Large Whale Entanglement Response Network and similar organisations working on rescue and prevention
Choose seafood certified under sustainable fisheries standards that include bycatch and entanglement reduction requirements
Advocate for ropeless fishing gear requirements in critical whale habitat areas
Report entangled whales to local coast guard or marine rescue authorities rather than attempting rescue independently
Oppose gillnet fisheries in areas with high whale entanglement risk without demonstrated mitigation measures
Support marine protected area designations that restrict the most dangerous fishing gear types in whale habitats