SINGAPORE — A new study has found that the amount of plastic entering the oceans is lower than previously estimated by scientists, but the volume floating on the water surface is much higher than earlier estimates.
SINGAPORE — A new study has found that the amount of plastic entering the ocean is lower than previously estimated by scientists, but the volume floating on the water surface is much higher than earlier estimates.
This amount is much higher than earlier estimates of around 250 million kg cited by various studies, which could have overestimated how much plastic was removed from the ocean surface through biological processes. The researchers also believe that the growth rate of plastic pollution in the ocean is “probably still growing around 4 per cent per year”.The study focused on measuring the amount of plastics that were “initially buoyant when entering the marine environment” and “do not consider polymers denser than seawater”.
In October 2021, the United Nations Environment Programme published a report, which found that plastics — as the “largest, most harmful and most persistent fraction of marine litter” — accounted for at least 85 per cent of total marine waste. Through sinking and degradation, the plastic pollutants may continue to accumulate on the seafloor, forming part of its sediment.
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