Aquatic invasive species have invaded the Great Lakes. Now, they are poised to invade thousands of lakes, rivers, and streams. We must stop the invasion! This handy, full-color guide by Wildlife Forever spotlights 44 aquatic invasive species, divided into three categories: invertebrates, plants, and fish. Get the details on how they live, grow, reproduce, and spread. Learn how they impact you, your environment, and the economy.Invaders of the Great Lakes offers tips for stopping aquatic hitchhikers, QR Codes that link to web pages with even more details, and other important information. Armed with this knowledge, you can help to protect our inland waters, keeping your favorite fishing spots and lakeshores healthy.