In Wisconsin, call Sea Grant specialist
Phil Moy at (920) 683-4697, or use the online
form to report a zebra mussel sighting. Outside
of Wisconsin, please contact your nearest Sea Grant program,
or your state department of natural resources
How to identify a zebra mussel:
- Zebra mussels
look like small clams, with a yellow or brownish D-shaped
shell, often with dark and light-colored stripes.
- They can be up
to two inches long, but most are under an inch.
- They usually grow
in clusters, and are generally found in shallow (6-30 feet)
- Zebra mussels
are the only freshwater mollusk that can attach itself firmly
to solid objects - submerged rocks, dock pilings, boat hulls,
water intake pipes, etc.
What to do if you spot an invader:
- Write down the date and exact location
where the zebra mussel was found.
- If possible, take the mussel with
you and store it in rubbing alcohol.
- In Wisconsin, report your
sighting on this web site, OR
- Call Phil Moy at Wisconsin Sea
Grant (920) 683-4697.
- Outside of Wisconsin, contact
your nearest Sea Grant program, or your state department
of natural resources.
- Whatever you do, DON'T throw
it back into the water!
What else can I do?
- Carry a Zebra
Mussel Watch card! That way, you'll know what they
look like and will be able to report any sighting to the
authorities. Order your free card
- Check out and print the Zebra
Mussel Field Guide for more zebra mussel photos.
- Visit the UW
Sea Grant Nonindigenous Species Web site for information
on how to get a Stop Aquatic Hitchhikers sticker.