Entanglement in fishing gear causes severe suffering and death for thousands of whales, dolphins, and seals annually. Understanding entanglement welfare impacts and prevention strategies guides effective intervention.
Marine mammal entanglement causes some of the most prolonged and severe suffering of any anthropogenic wildlife mortality. Whales entangled in heavy pot fishing gear carry enormous drag that exhausts them over weeks, while gear cuts into their skin and blubber causing progressive wounds. Animals cannot feed effectively while entangled, adding starvation to chronic pain. For right whales, whose reproductive rate is already so low that every individual death pushes the species toward extinction, entanglement welfare harm operates simultaneously at individual and population levels. Prevention through fishing gear modification — ropeless traps, weak links, and modified gear that reduces entanglement risk — addresses both welfare and conservation concerns simultaneously. Consumer preference for seafood from entanglement-minimizing fisheries creates market incentives for gear modification.