Some invasive species have been introduced to the Cook Islands.
Mosquitos have also been considered invasive, carrying diseases causing infenctions such as dengue fever, zika fever, and chikungunya.
[2] Invasive plants have been destroying habitat for birds and landsnails.
[2] Invasive plants include:[2] Nine Queensland fruit flies were eradicated between 2001 and 2003.
[2] Invasive insects in the Cook Islands include:[2] Invasive ants in the Cook Islands include:[2] Invasive birds include:[2] Invasive mammals include goats and pigs.