Sample filtration (IMAGE) University of Hawaii at Manoa Caption Ala Wai Canal and Harbor samples being filtered for analysis. Credit Grieg Steward, UHM SOEST. Usage Restrictions Images may only be used with appropriate caption and credit information. 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.