Aquatic Invasive Species

While ISN focuses primarily on terrestrial invasive plants – those growing on land or transitional areas, it is important to recognize some of the higher priority aquatic species as well. With the longest freshwater coastline in the United States, over 11,000 inland lakes, and extensive wetlands, Michigan is especially susceptible to aquatic invasive species.

Aquatic species share many of the same characteristics as the terrestrial growers. They have extremely effective reproduction mechanisms. Their tendency to overcrowd native species affects biological diversity and pose a significant threat to Michigan’s aquatic resources. Fish nursery habitat is destroyed while natural communities become simplified. Property values are reduced, fishing and boating is restricted, and recreational opportunities are limited.

The following species are just a sampling of our target invasives. If you think you have identified these species, please report it to the Midwest Invasive Species Information Network! ISN and other regional organizations treat and control aquatic invasives in northwest Michigan and early detection and rapid response is extremely important!

If you are enjoying Lake Michigan or one of the state's many inland lakes, streams or rivers, remember the mantra Clean, Drain, Dry:

CLEAN watercraft, trailer, motor, and equipment. Remove visible aquatic plants, mussels, other animals, and mud before leaving any water access.
DRAIN water from boat, bilge, motor and livewell by removing drain plug and opening all water draining devices away from the boat ramp. Regulations require this when leaving accesses in many states.
DRY everything at least five days before going to other waters and landings or spray/rinse recreation equipment (oars, life jackets, etc.) with high pressure and/or hot water (120°F or higher).