Masses of plastic particles found in Great Lakes
TRAVERSE CITY, Michigan (AP) - Already ravaged by toxic algae, invasive mussels and industrial pollution, North America's Great Lakes now confront another potential threat that few had even imagined until recently: untold millions of plastic litter bits, some visible only through a microscope.
Scientists who have studied gigantic masses of floating plastic in the world's oceans are now reporting similar discoveries in the lakes that make up nearly one-fifth of the world's fresh water. They retrieved the particles from Lakes Superior, Huron and Erie last year. This summer, they're widening the search to Lakes Michigan and Ontario, skimming the surface with finely meshed netting dragged behind sailing vessels.
"If you're out boating in the Great Lakes, you're not going to see large islands of plastic," said Sherri Mason, a chemist with State University of New York at Fredonia and one of the project leaders. "But all these bits of plastic are out there."
Experts say it's unclear how long "microplastic" pollution has been in the lakes or how it is affecting the environment. Studies are under way to determine whether fish are eating the particles.