A non-native species is an organism that has been introduced (either intentionally or not) to an area outside of its normal range. Invasive species are non-native species that often display particular characteristics like fast growth, large numbers of offspring, and rapid maturation. These qualities, and a lack of the natural predators and diseases that help control them in their native environment, allow invasive species to rapidly grow and spread, overwhelming and displacing native species. The critical natural refuges provided by Mediterranean Coast Network national parks are threatened by a number of invasive plant and animal species. Please see the links on this page to learn more.