Bottomed Out (IMAGE) University of Hawaii at Manoa Caption Scientists at the University of Hawai'i at Mānoa have determined that Hawai'i's sea turtles are afflicted with chronic tumors caused by consuming non-native algae "superweeds" along coastlines where nutrient pollution is unchecked. The disease that causes these tumors is considered a leading cause of death in endangered green sea turtles. The new research was just published in the scientific journal PeerJ. Credit Chris Stankis. Copyright Chris Stankis Photography/Blue Wave Images, with all rights reserved. Usage Restrictions Scientific, educational and news use only. Copyright Chris Stankis Photography/Blue Wave Images, with all rights reserved. License Licensed 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.