Surface -towed CSEM off Hawai'i Island (IMAGE) University of Hawaii at Manoa Caption The surface-towed marine controlled-source electromagnetic (CSEM) system in the ocean off of Hawai'i Island. Credit University of Hawai'i 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.