BOATsmart! Base de connaissances du Canada 

In recent years, Canada’s waters have been under threat from aquatic plants, fish and invertebrates (mussels, snails etc.) that originate from other parts of the world, and that have been introduced (accidentally or intentionally) to Canada’s waterways. With no natural predators, high reproductive rates and superior survival capabilities, these ‘invading species’ can rapidly take over Canada’s waterways and wetlands with harmful effects on our native fish, wildlife, habitats and ecosystems. Invading species include Eurasian Watermilfoil, Purple Loosestrife and Zebra Mussels.