Marine and terrestrial plastic pollution causes significant welfare harm to wildlife through ingestion, entanglement, and habitat degradation.
Plastic pollution causes welfare harm to wildlife at multiple scales. Large plastic items cause visible entanglement and gut impaction. Microplastics cause internal damage and chemical toxicity at cellular level. The welfare harm is not abstract — it manifests as seabird chicks starving with plastic-filled stomachs, sea turtles with plastic-blocked intestines unable to defecate, and marine mammals entangled in lost fishing gear. Reducing plastic pollution is a direct welfare intervention for wildlife.