Aquatic invasive species
If you work or play in Washington’s many waterways, you may be unknowingly spreading aquatic invasive species (AIS) destructive to the state’s environment and economy. But you can also be a part of the solution, helping to stop or slow the spread of these damaging species.
The Washington Department of Fish and Wildlife (WDFW) encourages the public to report possible invasive species. You can report non-native, invasive species through the Washington Invasive Species Council. Please call WDFW's Aquatic Invasive Species hotline with any questions at 888-WDFW-AIS.
Work to fight the spread of AIS is costly, but worth the investment as infestations can cost hundreds of billions of dollars in economic and environmental damage. WDFW's AIS unit does not have financial resources to effectively prevent or manage AIS at this time. The department is seeking additional funding for this program for the 2021-23 biennium.
Search for aquatic invasive species
Use this search function to find information on non-native aquatic animal species, including biology and current classification.
Aquatic invasive species of greatest concern
Some aquatic invasive species, such as the European green crab, can have dramatic impacts on ecosystems, outdoor recreation, and the economy.
Preventing the spread of invasive species
Learn the proper techniques to help prevent destructive invasive species from spreading in Washington, or decontaminate potentially infested gear.
AIS prevention permits for watercraft
These permits are required for operators of watercraft not registered in Washington, seaplanes, and commercial transporters of specified vessel types.
Boat inspection request form
Request an appointment for a free boat boat inspection in Eastern or Central Washington.
Ballast water
Non-native species can enter Washington’s waterways through the discharge of ships’ ballast water, which is used to stabilize vessels.
Boating in Washington FAQs
Know AIS requirements before you go boating in Washington.
AIS publications
Review and download program reports and studies.