In the fall of 2020, volunteers across the Green-Duwamish Watershed collected water samples to
survey for microplastics (plastic fragments and fibers smaller than 5mm). Microplastics are an emerging concern to the health of our waterways, the organisms that inhabit them, and the humans who rely upon them. Measuring their prevalence in local waterways can increase public awareness and help information restoration efforts that will protect this ecologically and culturally important watershed.