The filter feeder fish at the bottom of the food chain then ingest these nano-particles of plastic.

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The practice was banned by international treaty in 1988 because the plastic bad for sea life, from turtles on down the food chain.

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Recent supply chain movements suggest it is going to happen and will include a plastic casing.

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While he waits, a chain-smoking captain, Salih Yilmaz, busies himself with a plastic bottle and a piece of string, fishing for calamari to serve in his restaurant.

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And when that plastic breaks down into tiny little pieces, it is often swallowed by marine creatures and enters the food chain.

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