China is the world’s leading seafood producer and exporter, contributing 62 percent of global production. China has more than 8 million hectares of ponds, a land area large enough to completely blanket the state of South Carolina. These ponds produce fish, shrimp, frogs, and turtles for food, but they also produce plastic waste. Aquaculture, like most agriculture, uses plastics because they are lightweight, durable, and do not rust. In China and beyond, plastic is used in every production stage and as the industry is growing so is the volume of plastic.
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https://www.newsecuritybeat.org/2021/04/aquaculture-fishing-gut-plastic-waste-in-u-s-china/