Fieldwork (IMAGE) Max Planck Institute for Marine Microbiology Caption Harald Gruber-Vodicka from the Max Planck Institute in Bremen in the field nearby the seabed in which Paracatenula lives with its bacterial symbionts. The researchers collect such sediment cores in sea grass meadows off the Mediterranean island of Elba. Credit © Manuel Kleiner Usage Restrictions To be used only in the context of this publication and citing the correct 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.