Greg Ruiz (IMAGE) Smithsonian Caption Smithsonian marine biologist Greg Ruiz shows a Callyspongia sponge to a young girl in the Galapagos. Credit Linda McCann/Smithsonian Environmental Research Center Usage Restrictions This image is available for media to use for educational, non-commercial purposes, provided the credit above is included, in accordance with the Smithsonian Terms of Use: <a target="_blank" href="https://www.si.edu/termsofuse">https://www.si.edu/termsofuse</a> 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.