Green Coastal Waters (image) University of Hawaii at Manoa Share Print E-Mail Caption Coastal waters can turn green as shown here at Waimanalo Beach (left panel) when tiny single-celled algae in the genus Tetraselmis (inset) grow to high concentrations. Credit Lydia Baker, UH Manoa, SOEST Usage Restrictions Image may only be used with appropriate caption and credit. Share Print E-Mail 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.