The Michigan Department of Natural Resources has four research vessels that took to the water earlier this week to begin gathering information on the Great Lakes’ fish populations. 

From The Macomb Daily

“On Lake Michigan, the S/V Steelhead (also in operation since 1968) is used in a variety of fisheries assessment operations – including spring evaluations of adult yellow perch, whitefish, lake trout and Chinook salmon populations. Later in summer, the S/V Steelhead teams up with vessels from the U.S. Geological Survey and U.S. Fish and Wildlife Service to evaluate lakewide forage fish abundance.
‘The DNR is responsible for management of more abundant and diverse fishery resources than any other natural resource agency in the Great Lakes region, and the survey vessels are critical to this effort,’ said Jim Dexter, chief of Fisheries.”
Follow the link above to learn more about each of the vessels and their work on the Great Lakes.