What are small-size microplastic distributions telling us?

Writing in this issue of Global Change Biology, Shiye Zhao and co-authors report a microplastic soup extending thousands of meters below the South Atlantic Subtropical Gyre. This discovery contributes two pieces to the missing plastic puzzle- (1) nets have been under-sampling the smallest microplastic size fraction, which is actually not missing when using high-volume filtration, and (2) small microplastics in particular find their way below the surface. But their results also contribute several new questions, because some of what they found is quite surprising. This article is a Research Article on Zhao et al., https://doi.org/10.1111/gcb.16089.