Field Sampling (image) Virginia Institute of Marine Science Caption Post-doctoral researcher Yuehan Lu, Virginia Institute of Marine Science, collects field samples from the Chesapeake Bay watershed. Credit Photo courtesy of Sarah Cammer/VIMS. Usage Restrictions One-time use only. 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.