Marine plastic debris entangles and kills seabirds in large numbers, with albatrosses, gannets, and petrels among the most affected species.
Seabird entanglement causes death by strangulation, drowning, or injury that prevents flight and feeding. A gannet with fishing line wrapped around its bill or a shearwater with its wings bound by monofilament experiences a prolonged, distressing death. The welfare harm is preventable through source reduction of plastic entering marine environments and improved fishing gear management. Beach cleanups remove hazardous debris, but the volumes entering oceans annually far exceed removal capacity, making upstream policy change essential.