Invasive species are animals like rats and monitor lizards (Haluf) that were brought to these islands by people, and that didn’t live here in the old days. They can be very bad for islands, especially by eating bird eggs, baby birds, and baby turtles (and turtle eggs). These invasive species can even eat so many bird and turtle eggs that on some islands there are none left! Keeping invasive species out (including plants, insects, snakes and others) is known as biosecurity, and is important for everyone to be aware of. Invasive species can come in on ships and boats, airplanes, in people’s luggage, in boxes, and many other ways. Having a biosecurity program on islands (ways of noticing invaders and of dealing with them), can help keep the ecosystems healthy and can help make sure food for other animals and people (like birds and turtles) stays on the islands.