Species introduced on purpose or accidentally from other places can invade Alaska and harm the economy, environment, and even human health. Once these invaders arrive, it can be extremely difficult to control them without also hurting native species. The sooner you find them, the better chance there is to control them. That is why we keep a sharp eye out for new invaders and work with the State and other partners to prevent invasions.

Mitten Crab Photo. Credit: W. Lee Mecum, CDFG