Figure 4

Flow diagram of the experimental design used in Experiment 1 (A) and Experiment 2 (B). Experiment 1 was designed to determine if microplastics are capable of associating with protozoa in seawater using two microplastic types (microbeads and microfibers), and whether this association changed over time. Experiment 2 was designed to compare the association of protozoan parasites among different microplastic types and sizes.