Carrier (IMAGE) Karlsruher Institut für Technologie (KIT) Caption Complex biomimetic structures retain air under water. The air on the actually blue carrier appears silvery under water. Credit Photo: Thomas Schimmel, KIT Usage Restrictions None 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.