The West Coast features some of the most diverse habitats in the nation and areas especially vulnerable to the ecological and economic threats of invasive species. From Canada to Mexico, non-native species continue to invade aquatic habitats. Once established, infestations are often permanent and may spread throughout the region. Effective management of aquatic invasive species (AIS) requires strong regional coordination and collaboration. Sea Grant is undertaking a Regional Evaluative Approach (REAP) to predict the risks of AIS introduction and spread and to develop and test AIS education and management strategies.