Mysid (Mysis diluviana) densities using nets and hydroacoustics in Lake Michigan and Lake Huron, and relevant light attenuation data collected throughout the Great Lakes.

This dataset contains net tow and hydroacoustic data collected in the summer of 2021 in lakes Michigan and Huron to assess the spatial distribution and areal abundance of nighttime pelagic mysids (Mysis diluviana). This dataset also contains long-term secchi depth measurements collected in all five Great Lakes from 1996-2021 as environmental context to test hypotheses driving mysid abundance trends in the Great Lakes.