Bever Eel
Scientists at the Fisheries Association in North-Rhine Westphalia, Germany, observe silver-phased European eels as they encounter bypass systems in hydropower plants during their downstream migration. The 800-mm long eel swims very close to the trash rack. Several views of their DIDSON mounting system are shown.
Courtesy of Dr. Marc Schmidt, Fisheries and Hydroacoustics, Fisheries Assoc. North-Rhine Westphalia, Germany