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International legal regulation of marine plastic pollution: basic theories, specific issues, and China’s responses

Frontiers in Marine Science 2026
Yuanhong Shi

Summary

Quick heads-up: this isn't a health study, but it tackles something that affects the food you eat and water you drink, the messy, incomplete patchwork of international laws meant to stop plastic pollution from piling up in our oceans. The researchers found that current global agreements have major gaps and weak enforcement, which matters because ocean plastic breaks down into microplastics that end up in seafood and drinking water, potentially in our bodies. The paper argues for stronger, more coordinated international rules (plus a bigger role for countries like China) to actually get plastic pollution under control before it accumulates further.

Marine plastic pollution (MPP) is among the gravest environmental issues of the international community and is directly linked with the shared interests of humanity. The current international legal frameworks that regulate MPP primarily involve the United Nations Convention on the Law of the Sea, and other international conventions and other soft-law instruments. Nevertheless, there is still no fully developed international legal regulatory framework of MPP. According to the basic theories of the international regulation of MPP, this paper identifies the unresolved problems in the current process of governance, including the limitations of existing international conventions, the difficulty in negotiating the Global Plastics Treaty, the insufficient compliance capacity of relevant States, and the inadequate oversight mechanisms. Based on the experience of the representative countries, regions, and other international organizations, this paper suggests that China should pursue a holistic approach to governance of MPP by enhancing its domestic laws, encouraging the implementation of the Global Plastics Treaty, facilitating and supporting international governance mechanisms to increase state compliance, and enhancing regulatory and enforcement capabilities.

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