“Based on the ambient population data and the local runoff, the researchers estimated that the Danube carries about 4.2 tons of plastic litter into the Black Sea on a daily basis. On an annual basis this means 1,533 tons of litter; more than the estimated mass of the infamous litter islands in the northern part of the Atlantic Ocean.
So far the growing quantity of litter has been studied almost only in oceans and seas, however, plastic particles can cause similar harms in rivers as well. Fish may swallow the small plastic items which can make them die. Toxic materials can be absorbed by the plastic items, possibly entering humans who eat fish.”
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