From the Great Pacific garbage patch to inland rivers, plastics are among the most widespread contaminants on Earth. Microplastics—particles of plastic smaller than five millimeters—are especially pervasive. As they build up in Earth’s waters, microplastics are also becoming a permanent part of the planet’s sedimentary layers.
Click here for original story, Microplastics in the Great Lakes: Becoming benthic
Source: Phys.org