Pebbles in a Sediment Core (image) Goethe University Frankfurt Caption This shows pebbles in a sediment core from the Antarctic coastal waters. The pebbles were taken to open sea by icebergs and ultimately fell to the ocean floor. Credit Courtesy of Saiko Sugisaki Usage Restrictions None 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.