"If"? Please do the math then. OK, fine, I'll do the math for you. Here's a list of discharge rates for most of those rivers: https://en.wikipedia.org/wiki/Li

"If"? Please do the math then. OK, fine, I'll do the math for you. Here's a list of discharge rates for most of those rivers: https://en.wikipedia.org/wiki/List_of_rivers_by_discharge https://en.wikipedia.org/wiki/List_of_rivers_by_discharge add in the Hai river at 717 m^3/s and the total discharge volume of those 10 rivers together adds up to 123,500 m^3/s, that's 7.4 million cubic meters per minute. What do you think a few cubic meters of plastic diluted into over 7 million cubic meters looks like? It looks like a dilution level of around 1 part per million. Is that representative of the hugely polluted outflows of these rivers? It certainly seems like it to me.