Trophic Cascade addresses the impacts and causes of marine bioinvaders on a global scale. With the rise of globalization, human mediated transfer mechanisms give rise to invasive species which overwhelm the delicate balance of aquatic ecosystems. In a place where species interactions begin at a microscopic level, small changes have huge impacts and huge changes wreak havoc. Remove a key predator, and prey takes over; add another predator, and the first one declines.