Aquatic invasive species are plants or animals that live in water where they don’t naturally belong. They usually get there by accident, often because of human activities like shipping or fishing. Once they arrive, they can cause lots of problems.
In short, aquatic invasive species are a big problem because they disrupt nature and can cause trouble for humans in terms of the economy and our enjoyment of natural waterways.
The threat from AIS is getting bigger because it’s now easier to move these organisms across waterways, states, and even countries! They can hitch a ride on boat hulls, fishing gear, clothes, and even get transferred with fishing bait.