List of known genera occurring on millimeter-sized pelagic plastics.

Organism groups (first column), their abundance and/or frequency of occurrence (when available; second column), and genera (third column). References are indicated by superscript letters and given at the bottom of the table, along with approximate length range of plastics examined. Genera in bold indicate those first detected in this study. aThis study (1.7–24.3 mm), bZettler et al. 2013 (2–20 mm) [27], cCarpenter and Smith 1972 (2.5–5 mm) [22], dCarson et al. 2013 (1–10 mm) [26], eGoldstein et al. 2014 (4–5 mm) [38], fGregory 1978 (2–5 mm) [24], gGregory 1983 (1–5 mm) [25], hMajer et al. 2012 (2–5 mm) [74], iGoldstein et al. 2012 (1.2–6.5 mm) [48], jCarpenter et al. 1972 (0.1–2 mm) [23].