Ulva (Algae) Up Close (image) University of Hawaii at Manoa Share Print E-Mail Caption Two samples of Ulva spp., that were deployed near shore on Maui, show large differences due to growth in coastal waters that have either high (left) or low (right) levels of SGD-derived nitrogen. Credit University of Hawaii Usage Restrictions Image may be used only with 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.