The two-hour documentary, Making Waves: Battle for the Great Lakes, takes viewers below the surface of the world’s largest freshwater ecosystem and into the middle of a complex war for survival. For more than a century, non-native species of plants, fish, invertebrates and microscopic organisms have been silently invading the Great Lakes, leaving devastation in their wake. These invasive species are transforming the ecosystem from top to bottom, pushing some native species to the brink of extinction, and costing the region hundreds of millions of dollars in control costs and lost revenue each year. With more than 180 invasive species in the Great Lakes watershed, and new invasives on the radar, the future of the Great Lakes is at stake. Narrated by Bill Kurtis, Making Waves traces the path of the invasion and joins researchers on the front lines as they combat invasives and work to restore native species, in an effort to prevent a biological takeover of the Great Lakes.