Of the estimated 52 billion masks manufactured globally in 2020, it's believed 1.56 billion will enter our oceans this year, resulting in an additional 4,680 to 6,240 metric tonnes of marine plastic pollution. "OceansAsia" says the report used a conservative loss rate of 3 percent, and the average weight of 3 to 4 grams for a single-use polypropylene surgical face mask, to arrive at the estimate. The 1.56 billion face masks that have entered our oceans in 2020 are there for the long run. They will remain in the ocean for 450 years or more, and they’ll break into smaller pieces.
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