Interesting, on page 19 of this paper[0] it says "The fishing industry is responsible for the largest input (50–90%) of total plastic marine debris to the ocean

Interesting, on page 19 of this paper[0] it says "The fishing industry is responsible for the largest input (50–90%) of total plastic marine debris to the oceans". Granted, [0] is from 2012, whereas the paper from Schmidt et al is newer. Nonetheless, you would think Schmidt et al would cite this older paper. [0] http://plastics.earthmind.net/files/ART_Hammer_2012.pdf http://plastics.earthmind.net/files/ART_Hammer_2012.pdf EDIT: It appears the 2017 paper is looking at microplastics.