Deep-sea sponge (IMAGE) Max Planck Institute for Marine Microbiology Caption Sponge of the species Hyalonema obtusum with anemones attached to its stalk. The sponge itself is attached by the stalk to a polymetallic nodule in the Clarion-Clipperton Zone. Credit © GEOMAR, ROV-Team Usage Restrictions Only to be used in the context of this publication and citing the full copyright. 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.