Drill crew (IMAGE) University of California - Santa Cruz Caption Crew members abroad the research vessel JOIDES Resolution drilled sediment cores from the seafloor in the Bering Sea during a 2009 IODP expedition on which UCSC ocean scientist Christina Ravelo was co-chief scientist. Credit Carlos Alvarez Zarikian, IODP/TAMU Usage Restrictions For use only with news coverage of this research 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.