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Zebra Mussel

Zebra and quagga mussels are freshwater bivalves native to the Black Sea region of Eurasia. Both species were believed to have been introduced in the late 1980's by ballast water from transoceanic ships carrying veligers (larvae), juveniles or adult mussels.

What is it? Zebra Mussels are an invasive invertebrate.
Where did it come from? Eastern Europe. They were brought here in the water held in ships.
Where is it found? Zebra Mussels are found throughout the Great Lakes and many inland lakes in southern and central Ontario.
What does it do? Zebra Mussels filter plankton from water, leaving less food for native organisms like fish. Their sharp shells litter beaches and cut the feet of swimmers.
What can you do? Inspect, clean, and drain your boat!