Seaglider, Moorings Work Together (IMAGE) University of Washington Caption Moorings, strings of instruments tethered to the seafloor, monitor water in Davis Strait. The instruments are too valuable to be positioned where low-hanging pieces of ice might strike them. But it's that upper layer where the freshest water is often found, a place where seagliders travel as they dive repeatedly from the surface to the seafloor as the one in the center of the illustration is doing. Credit Applied Physics Laboratory/U. of Washington Usage Restrictions Credit line required 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.