CalCOFI (IMAGE) University of California - San Diego Caption CalCOFI CTD seawater sampling such as this is augmented by data from satellites, research buoys and robotic gliders to track the physical and biological response to El Niño. Credit Scripps Institution of Oceanography, UC San Diego 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.