Hydrothermal Vent Field (IMAGE) U.S. National Science Foundation Caption This is a hydrothermal vent field at Axial Volcano seen through the porthole of the submersible Alvin. Credit Mark Spear/WHOI 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.