The Northeast-Midwest Institute/Great Ships Initiative with a support from the Great Lakes Protection Fund has created a new tool to investigate aquatic invasive species. This project will develop new scientific methods to estimate the risk of establishment of aquatic invasive species (AIS). The team will determine how the invasion risks vary with the numbers of invasive organisms released into the environment. This work, ultimately, will lead to fewer successful invasions of the Great Lakes. The project responds directly to a key research need identified by the National Academies of Sciences (NAS), and includes many of the members of that panel on the project team.