Big brands impact small islands: Sources of plastic pollution in a remote and protected archipelago

Remote islands are disproportionately affected by plastic pollution, often originating from elsewhere, so it is important to understand its origins, to stop debris entering the ocean at their source. We investigated the origins of beached plastic drink bottles in the Chagos Archipelago, a large remote Marine Protected Area (MPA) in the Indian Ocean. We recorded the brands, countries of manufacture, types of drink, and ages of plastic bottles and their lids. The prevalent type of drink was water, with items mostly manufactured in Indonesia, China, and the Maldives. The main brands were Danone and the Coca-Cola Company. We deduced that 10 % of the items originated from ships passing the archipelago, including all the items manufactured in China. The identification of the brands creating plastic pollution in remote MPAs with high biodiversity supports extended producer responsibility, one of the proposed policy development areas of the Global Plastics Treaty. •We recorded 5181 plastic drink bottles and 962 loose lids over 3.8 km of beach.•The prevalent documented type of drink was water.•The main identified countries of manufacture were Indonesia, China, and the Maldives.•The main brands were Danone and the Coca-Cola Company and subsidiaries.•We estimate that 10 % of the items originate from ships passing the archipelago.