mm) on 20 beaches in Korea. The mean abundance of it was 13.2 items/m 2, and the mean
weight was 1.5 g/m 2. Hard plastic and Styrofoam were the dominant types. The proportions
of hard plastic and Styrofoam were highly variable among the beaches, each accounting for
0–100% of the total debris on a given beach with 32% and 48.5%(by number) on average,
respectively. Relatively lower abundances of mesoplastic marine debris compared with our …