Marine plastic pollution causes direct welfare harm to marine wildlife through entanglement, ingestion, and toxic exposure. Understanding the scale and welfare impacts informs effective advocacy and behaviour change.
Marine plastic causes widespread, chronic welfare harm to marine wildlife at enormous scale. Entangled animals experience prolonged suffering before death from drowning or slow strangulation as tightening plastic cuts into growing tissues. Chicks that die from plastic-filled stomachs starve slowly despite appearing to receive food from attentive parents. Sea turtles with intestinal blockages from plastic ingestion experience progressive debilitation over days to weeks. The scale of the problem - hundreds of millions of animals affected globally each year - makes plastic pollution one of the most significant human-caused welfare issues in marine environments. Individual behaviour change, combined with policy requiring producer responsibility for plastic packaging, can substantially reduce these welfare harms.