Drilling (IMAGE) University of Tokyo Caption Metal shafts extend the reach of the drill as it burrows below the seafloor. Credit © 2021 Kinoshita et al. Usage Restrictions Credit © 2021 Kinoshita et al. 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.