The National Research Institute of Fisheries Engineering (NRIFE) of the Japan Fisheries Research and Education Agency (FRA) will this spring deploy an ASL Environmental Sciences solar-powered datalogger with a cellular modem. The deployment of this system follows FRA’s use of the ASL multifrequency acoustic zooplankton fish profiler (AZFP) in Yamada Bay, 450 km north of Tokyo, since 2013. The data they