Aquatic Invasive Species

INVASIVE species

Washington state law prohibits transport of any aquatic nuisance species (non-native plants and creatures) on any size boats, trailers, fishing gear, or bait wells, and allows state authorities to detain suspected carriers. 

Learn more about aquatic invasive species by visiting the Washington Department of Fish and Wildlife.


The Washington Department of Fish and Wildlife requires operators of vessels registered outside Washington state to purchase a permit to help prevent the spread of aquatic invasive species (AIS).

What you can do

To prevent the increasing threat of invasive species, such as Milfoil, zebra mussels and others:

  • Always drain live wells and transom wells before leaving the water
  • Remove all visible aquatic plants and animals from your boat, motor, trailer and other equipment before leaving the access area
  • View other tips in the Boater Education Safety Course.

Report sightings

 If you see an invasive species, you can report it online or call the reporting hotline at 877-9-INFEST. Learn more about invasive species at the Washington Invasive Species Council.