[drak0n1c]

Here is a HN comment from 3 months ago that includes extensive research on the subject. More specifically, much of the plastic waste in the ocean looks to be from merchant shipping abuses, not single-use plastic litter.

https://news.ycombinator.com/item?id=18731627

[jacobolus]

Yes, we also need a worldwide ban on plastic fishing nets, and their replacement by something which biodegrades.

Pretty hard political problem though.