Scientific-grade echosounders are a standard tool in fisheries science and have been used for monitoring the interactions of fish with tidal energy turbines in various high flow environments around the world. Some of the physical features of the Minas Passage present unique challenges in using echosounders for monitoring in this environment (e.g., entrained air and suspended sediment in the water column), but have helped to identify hydroacoustic technologies that are better suited than others for achieving monitoring goals. John Horne’s report and presentation will present a overview of echosounders and associated software that are currently available for monitoring fish in high-flow environments, and identify those that are prime candidates for monitoring tidal energy turbines in the Minas Passage