Lake Superior Sampling (IMAGE) Bigelow Laboratory for Ocean Sciences Caption Researchers at the University of Minnesota Duluth collected water samples from the western arm of Lake Superior to test out a new method for characterizing microplastics in aquatic systems. Credit Elizabeth Minor Usage Restrictions Fair Use. Credit Creator. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.