Table of Contents

Download the PDF Version

Aquatic Nuisance Species (ANS)/
Aquatic Invasive Species (AIS)

Non-native species have hurt our native species and have caused environmental, economic, and recreational damage. Species such as zebra/quagga mussels, not currently in Washington, would have devastating effects if they were to enter our waters. ANS/AIS are commonly spread by hitching a ride on vessels and trailers. It is illegal to transport or spread ANS/AIS. Follow these steps every time you leave a body of water.

  • Examine all your gear before leaving a launch area, and remove all visible mud, plants, and fish/animals (even fragments) from the boat, trailer, buckets, clothing, pets, etc.
  • Remove the drain plug, and dump all water from motors, jet drives, holds, bilges, live wells, boat hulls, scuba tanks and regulators, boots, waders, bait buckets, and floats.
  • Clean each item with hot water, including your boats, motors, trailers, anchors, decoys, floats, and nets. If available, pressure wash your hull, motor, and any gear exposed to the water, especially the bottom of the hull and the propeller area.
  • Dry everything thoroughly. If possible, allow five days of drying time before entering new waters.
  • NEVER release plants, fish, or animals into a body of water, unless they came out of that body of water.

Hitching a ride on vessels and trailers is the most common way that ANS/AIS are spread.

For more information