Manganese nodule with a deep-sea sponge. (IMAGE) Helmholtz Centre for Ocean Research Kiel (GEOMAR) Caption Manganese nodule with a deep-sea sponge. Expedition SO242. Credit ROV KIEL6000, GEOMAR. Usage Restrictions in the context of this press release only 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.