Ah, good catch! That does agree with the article, so maybe that's where the claim comes from and not directly from the Greenpeace article. There's still a diff

Ah, good catch! That does agree with the article, so maybe that's where the claim comes from and not directly from the Greenpeace article. There's still a difference between "quantity dumped per year" and "total amount measured right now". It seems like ghost gear is not a large fraction of the plastic entering the ocean, but it a large fraction of the accumulated large pieces in the garbage patch. I presume that's because fishing gear is designed to survive in the ocean so takes longer to break down than other plastics.