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Ocean scientists collect data using free-floating buoys called drifters. Each buoy has sensors to track currents and temperature, and they also have the ability to talk to satellites. Most are made of plastic and foam, and powered by lead acid batteries. At Pier 9, Cy Keener used Autodesk software to rethink and redesign drifters using solar power and ocean friendly materials. These prototypes are made from blown glass and metal. After a few more tests, they will be released into the Pacific and will report wave shape, wave height, and surface temperature as they move with the currents.
See Cy’s other work
See this project in Instructables