Read the first sentence: “Lost and abandoned fishing gear which is deadly to marine life makes up the majority of large plastic pollution in the oceans, according to a report by Greenpeace.” I added the italics. Note also that the OP article is about micro plastics.
https://www.theguardian.com/environment/2019/nov/06/dumped-fishing-gear-is-biggest-plastic-polluter-in-ocean-finds-report
Read the first sentence: “Lost and abandoned fishing gear which is deadly to marine life makes up the majority of large plastic pollution in the oceans, according to a report by Greenpeace.” I added the italics. Note also that the OP article is about micro plastics.
Fishing nets don’t photodegrade into microplastics?