The majority of Canada is relatively wild, covered by hundreds of thousands of square kilometres of rivers and lakes and hundreds of millions of hectares of forests. Canada is also home to many globally important ecosystems, including 25% of the world's wetlands and boreal forests.
However, habitat loss, pollution, climate change and unsustainable logging practices have pushed hundreds of species within the country dangerously close to extinction, including polar bears, eastern cougars, beluga whales, whooping cranes, spotted owls and wood bison.
Ocean waters and other waterways are also becoming contaminated due to agricultural, industrial, mining and forestry activities, along with direct impacts of urban residents.