Tiny Shells Reveal Change (IMAGE) NOAA Headquarters Caption These colorful spots are tiny foraminifera shells taken from the mud of core samples as seen under a microscope. Credit NOAA 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.