The invasion of non-native species can have profound effects on native populations and communities, ecosystem functioning and even human health and economics. Investigating invasion patterns, mechanisms and their effects receives increasing attention as the number of reported invasions increased almost exponentially over the past 200 years. This session provides a platform for young marine researchers to present their research on species invasions from the whole spectrum of spatio-temporal scales and methods. Case studies of distribution patterns of single species, of overarching invasion mechanisms or of the development of novel ecosystems, e.g. Pacific oyster reefs in the Wadden Sea, are welcome.