Microplastics in seafood

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Abstract

Microplastics and their distribution in the ocean Microplastics are generally defined as any plastic item less than 5 mm in length, when measured along its longest dimension1. Some microplastics are directly manufactured and are referred to as “primary microplastics” (e.g. many cosmetic products include microplastic “beads”). Other microplastics result from larger plastic items fracturing and degrading into smaller pieces, and are referred to as “secondary microplastics”1. Microplastics including microfibers are ubiquitous in the environment, found in soil, freshwater, air and the ocean2,3.