“90% of plastic polluting our oceans comes from just 10 rivers”
https://www.weforum.org/agenda/2018/06/90-of-plastic-polluting-our-oceans-comes-from-just-10-rivers/
“By analyzing the waste found in the rivers and surrounding landscape, researchers were able to estimate that just 10 river systems carry 90% of the plastic that ends up in the ocean.
Eight of them are in Asia: the Yangtze; Indus; Yellow; Hai He; Ganges; Pearl; Amur; Mekong; and two in Africa – the Nile and the Niger.”
I live on the coast of Ecuador. I pick up about 50 lbs of plastic, cardboard, plastic rope and glass each week over about a 100 yard frontage. Comes mostly from fishermen but weekend beach users just leave their trash.