Bogdan Onac submerged bridge study 4 (IMAGE) University of South Florida Caption Phreatic overgrowths on speleothems grow exactly at sea level, pictured above the diver in the Galeria de les Delícies in Drac Cave, Mallorca, Spain, offering a more accurate reconstruction of past sea level history. Note the submerged stalagmites that grew when sea level was much lower. Credit M.À. Perelló Usage Restrictions NA License Original 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.