Deep-sea sponge (IMAGE) Max Planck Institute for Marine Microbiology Caption Sponge of the species Hyalonema obtusum in the Clarion-Clipperton Zone. Amphipods and cnidarians grow on the stalk of the sponge, while a sea cucumber sits at its foot. 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.