Plastic waste in the oceans causes direct harm to marine wildlife through entanglement, ingestion, and chemical contamination, representing one of the largest sources of anthropogenic wildlife suffering.
Marine plastic causes prolonged suffering in individual animals. Entangled animals experience constriction injuries, restriction of feeding, and exhaustion. Ingested plastics cause internal blockages, reduced feeding drive, and toxic chemical exposure. Ghost nets kill billions of animals in slow, invisible, ongoing events across the ocean. The welfare scale of marine plastic is staggering, and reduction requires both individual and systemic action.