Plastic pollution in the oceans causes severe welfare harm to marine wildlife through entanglement, ingestion, and the accumulation of toxic chemicals in the food chain.
Marine plastic causes some of the most prolonged and agonising deaths in wildlife. Entanglement in ghost nets causes slow drowning for air-breathing mammals and birds, or causes injuries that lead to starvation. Plastic ingestion fills stomachs with indigestible material, causing starvation while animals feel satiated. Sea turtle and seabird populations face chronic exposure; individual animals found in rehabilitation often carry life-threatening plastic burdens. Preventing plastic entry into the ocean is the most impactful intervention; removing existing ghost gear is also valuable but far more challenging.