Paracatenula in the Lab (image) Max Planck Institute for Marine Microbiology Share Print E-Mail Caption Paracatenula worms in the laboratory where the flatworms live in glass vials filled with sand and seagrass pellets. With this approach the worms can be kept for more than three years. Credit Oliver Jaeckle/Max Planck Institute for Marine Microbiology Usage Restrictions To be used only in the context of this publication and citing the correct copyright. Share Print E-Mail 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.