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Marine pollution is widely recognised as one of the four major threats to the world’s oceans, along with climate change, habitat destruction and over-exploitation of living marine resources. Spills of oil and other chemicals into the marine environment, both from ships and land-based sources, is a significant source of pollution. In a region sometimes called ‘Oceania’, the health of the ocean is fundamental to the sustainability of all aspects of Pacific island life. The importance of coastal and marine environments to every aspect of the lives of Pacific islanders cannot be overstated, and the impacts of marine spills constitute a major concern for Pacific island peoples. Because of a lack of major land-barriers throughout the Pacific, combined with a complex pattern of trans-oceanic currents, the Pacific Ocean is perhaps the most highly connected and continuous ocean, in terms of water movement, on the planet. This compounds the seriousness of marine pollution for the region. Events in one area can have implications for other areas, as pollutants and contaminants are carried from their sources by ocean movements.