Microplastics are the latest threat to the Great Lakes.
The small pieces of plastic range in size, from microscopic to the size of a fingernail.
The plastics come from everyday products, such as scrubbing beads in facial cleansers, beauty products, even toothpaste.
For nine months, Shanley McEntee sailed the Atlantic Ocean and Great Lakes aboard the Sea Dragon, a research ship.
Shanley has been collecting and analyzing water samples from the various bodies of water.CC