Guam Coral Reefs (IMAGE) University of Guam Caption Coral reefs around the world are increasingly under threat from coral bleaching which destroys colonies and interrupts the food chain they support. Scientists at the University of Guam Marine Laboratory are using a new genetic sequencer to search for the biological mechanisms that allow some colonies to survive and thrive while others die. Credit University of Guam Usage Restrictions None 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.