Rise and Fall (IMAGE) Columbia Climate School Caption A new study of shorelines in the Bahamas may change estimates of past sea levels. Here, some of the authors survey coastal rocks on the archipelago’s Crooked Island formed when sea levels were higher. Credit Blake Dyer Usage Restrictions Credit must be given. 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.