Stop the

Spiny Water Flea Invasion!

spiny water flea invasive species

Stop the

Spiny Water Flea Invasion!

spiny water flea invasive species

Stop the

Spiny Water Flea Invasion!

Prevent The Spread Of The Spiny Water Flea In Our Inland Lakes

Share with fellow boaters

This video challenges boaters to help halt the spiny water flea from invading our lakes. It was produced by experts from UW-Extension and UW-Madison to urge boaters to adopt behaviors that will help stop the spread of a tiny, troublesome crustacean known as the spiny water flea. They can hurt our lakes by making the water greener and degrading fisheries.

The spiny water flea collected on a fishing line

Do your part to stop the invasion

Protect Our Waters

Always INSPECT, REMOVE, DRAIN, NEVER MOVE live fish, and always dispose of unwanted bait in the trash. Take these steps to comply with Wisconsin invasive species laws.

Help Other Boaters

Become a Clean Boats Clean Waters watercraft inspector and help other boaters stop the spiny water flea!

Gather Data

Join the Citizen Lake Monitoring Network and help scientists look for the spiny water flea in new lakes.

Learn More

Order spiny water flea and other aquatic invasive species publications for free from the Wisconsin Department of Natural Resources.

Listen to Music

Listen to these aquatic invasive species songs to help you remember best practices to stop the spread of the spiny water flea and other invasive species.

Tell Your Friends

Tell your friends about the spiny water flea by sharing this video and website on Facebook and Twitter.


Donate money to help us create new, fun ways to communicate about protecting our lakes.


Learn more about the spiny water flea!

fishing boats headed out on inland lake

Stop Aquatic Hitchhikers Protect Your Waters

This video is a product of a multidisciplinary collaboration between the University of Wisconsin-Extension, the UW Environmental Resources Center, the UW-Madison Department of Life Sciences Communications, the UW-Madison Center for Limnology, the UW Sea Grant Institute, and many other partners.