Marine debris — plastic, fishing gear, and waste — entangles, injures, and kills millions of marine animals annually with welfare consequences that are largely invisible to the public.
Marine debris welfare harms are often prolonged and severe: entanglement in ghost gear can restrict movement and feeding for weeks before death; plastic ingestion causes slow starvation as stomachs fill with non-food material. Rescue of entangled animals is difficult and dangerous for both animal and rescuers. Individual animals rescued from entanglement often carry permanent injuries. Prevention through upstream plastic reduction is more welfare-effective than rescue.