Abstract
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.