Robot close up (IMAGE) University of California - San Diego Caption The robot is equipped with flipper-like appendages which allow it to swim under sand. The two black fins on its nose ensure that it remains submerged under the sand. Credit David Baillot/University of California San Diego Usage Restrictions Please credit License Original 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.