As time progresses, there has been an increase in the destruction of natural ecosystems and a decrease in the biodiversity of marine systems. Biological invasions contribute to being one of the leading threats and are one of the 'big five' environmental issues of public concern. The majority of the time, these invasive species, or alien invaders, are often introduced by humans. They can be introduced by agglomerating underneath a ship and moved during travel, through shipments of food consumption, or even by leisure traveling. When non-native species become introduced to a different habitat, there can be many impacts on the new habitat and the native organisms, both gran and subtle. A whole ecosystem can become altered due to introduced species consuming, overgrowing, or infecting natives. If they not contained or eradicated, it is a possibility that there can be extinction for natives.
It is essential to mention that not all non-native species are necessarily harmful. Although very rare, some introductions have been helpful for consumption. "Some productive forest industries and fisheries are based on introduced species."
The concept of the destruction of invasive pests was first introduced in the 1900s. Since then, scientists, non-profits, and community members alike have been trying to tackle the problem of foreign invaders taking over their backyard. They have created more problems than good, and now more than ever, there is research being done to prevent the destruction of precious natural ecosystems.