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High Microplastic and Anthropogenic Particle Contamination in the Gastrointestinal Tracts of Tiger Sharks (Galeocerdo Cuvier) Caught in the Western North Atlantic Ocean
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High microplastic and anthropogenic particle contamination in the gastrointestinal tracts of tiger sharks (Galeocerdo cuvier) caught in the western North Atlantic Ocean
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Every tiger shark examined in this study of western North Atlantic specimens contained anthropogenic particles in their digestive tracts, with one individual carrying over 1,600 particles. Of the particles chemically confirmed via spectroscopy, 45% were true microplastics, with polypropylene the most common polymer. Tiger sharks' wide-ranging, generalist feeding habits — consuming nearly anything they encounter — make them effective sentinels for ocean plastic pollution, and the high contamination levels found here were the highest reported for any elasmobranch species.
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