Monitoring Structure (image) University of Washington Caption The UW monitoring tripod records currents, water quality and sound at the proposed site, and tracks marine mammal calls and electronic tags on passing fish. Extra weight on the tripod's feet help it to stay put in fast-moving water. Credit University of Washington Usage Restrictions With credit to University of Washington 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.