Islands under threat (IMAGE) University of Plymouth Caption Islands in the Maldives - where sandy or gravel islands sit on top of coral reef platforms - are among those that could be affected by a global rise in sea levels Credit Gerd Masselink/University of Plymouth 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.