May 15, 2021. The first full day of operations during the 2021 Technology Demonstration saw a successful CTD (conductivity, temperature, and depth) cast; the water samples collected during the cast will be used for environmental DNA analysis. We also conducted a launch and recovery of the autonomous underwater vehicle (AUV), seen being recovered in this video. If you're wondering what a technology demonstration is, Mike White, Expedition Coordinator, explains in this video.