First Evidence of Microplastic Contamination in Fish from the Remote Atoll Nation of Tuvalu

Tuvalu is one of the world's smallest and most isolated nations.Despite this, our study shows microplastics are present in critical food fishes from the main atoll Funafuti's lagoon.We sampled 201 fish and found 37% of the individuals contained microplastic particles.By establishing the first baseline for Tuvalu, analyzing locally caught fish across 44 species, we provide clear evidence that microplastics have infiltrated subsistence diets in a setting with minimal industry, limited land, and vast distance from major population centers.Given the reliance of people in Tuvalu on fish for daily nutrition, livelihoods and culture, these results are particularly concerning.The findings here help to correct geographic gaps in global microplastics research and bring the lived realities of remote atoll communities into regional and international policy conversations.Action to reduce this problem will require upstream solutions to reduce plastic at its source, not just downstream clean-ups, making these findings relevant for discussions in the Global Plastics Treaty negotiations.