These Cleaning Devices should be placed at the mouth of these 10 rivers. It would prevent 90% of all Ocean plastic.
https://www.dw.com/en/almost-all-plastic-in-the-ocean-comes-...
https://www.dw.com/en/almost-all-plastic-in-the-ocean-comes-...
https://www.theguardian.com/environment/2019/nov/06/dumped-f...
70% of large things. 10% of total.
Greenpeace: "Ghost gear makes up an estimated 10% of the plastic waste in our oceans, but represents a much higher proportion of large plastics found floating at the surface."
https://www.greenpeace.org/africa/en/blogs/8248/ghost-gear-t...