Canada operates the world's longest terrestrial protected areas network, stretching 6,675 kilometres from Cape Spear in Newfoundland and Labrador to Ivvavik National Park in Yukon. The country maintains 47 national parks, 4 national marine conservation areas, and 171 national historic sites under Parks Canada administration, collectively protecting 364,000 square kilometres of land and 11,900 square kilometres of ocean. Wood Buffalo National Park, established in 1922, covers 44,741 square kilometres across Alberta and the Northwest Territories—larger than Denmark. This park protects the only natural nesting site for whooping cranes, which numbered 21 individuals in 1941 and reached 505 by 2019 through bilateral conservation efforts between Canada and the United States. The park also contains the Peace-Athabasca Delta, one of the largest freshwater deltas in the world, and the world's largest population of free-roaming wood bison, which numbered approximately 5,000 individuals as of 2021.
Banff National Park, established in 1885, became Canada's first national park and the third national park established globally, following Yellowstone and Royal National Park in Australia. The park's creation followed the discovery of hot springs on Sulphur Mountain in 1883 by Canadian Pacific Railway workers Frank McCabe and William McCardell. The park initially covered 26 square kilometres around the hot springs and expanded to its current 6,641 square kilometres. Banff protects grizzly bears, with a 2018 population estimate of 65 individuals within park boundaries, and elk populations that range between 200 and 300 animals in the Bow Valley. The park enforces seasonal area closures totaling approximately 28% of its terrain to reduce human-wildlife conflict, a practice implemented after the 1980 death of two people in separate grizzly bear incidents.
The Species at Risk Act, enacted in 2002, provides federal protection for 622 species as of January 2024. The Act lists the Vancouver Island marmot, which declined to fewer than 30 individuals in 2003, prompting a captive breeding program that has released more than 500 marmots since 2003. Wild population estimates reached approximately 200 individuals by 2022. The Act also protects the North Atlantic right whale, with a 2022 population estimate of 356 individuals in waters off Nova Scotia, New Brunswick, and Quebec. Ship speed restrictions of 10 knots in the Gulf of St. Lawrence came into effect in 2017 after 12 right whales died in Canadian waters that year. Subsequent measures reduced documented ship strikes, with two deaths in 2018, four in 2019, and zero in 2020.
Torngat Mountains National Park, established in 2005 in northern Labrador, protects 9,700 square kilometres of habitat for polar bears, which migrate through the park between sea ice hunting grounds and summer denning areas. The park operates under a cooperative management agreement with the Nunatsiavut Government, representing Labrador Inuit, signed in 2008. This agreement grants Inuit rights to continue traditional hunting, fishing, and gathering within park boundaries. The park recorded 51 polar bear sightings during the 2019 field season and requires all visitors to travel with Inuit bear guards. The park also protects archaeological sites dating back approximately 7,000 years, including remains of Palaeo-Eskimo, Dorset, and Thule cultures.
Point Pelee National Park occupies 15 square kilometres at 41.9 degrees north latitude, making it the southernmost point of mainland Canada, on the same latitude as northern California and Rome. The park lies on the Atlantic Flyway and records approximately 390 bird species, including 100 species that breed within park boundaries. The park's position as a migration stopover produces spring concentrations exceeding 40,000 birds per day during peak periods in May. The park protects Carolinian forest, a vegetation zone that exists in Canada only in southwestern Ontario and contains 70 species of trees including tulip tree, sassafras, and black walnut. Approximately 40% of Canada's rare species occur in this zone, which has lost 88% of its original extent to agriculture and development since European settlement began in the 1780s.
Gwaii Haanas National Park Reserve, National Marine Conservation Area Reserve, and Haida Heritage Site protects 5,000 square kilometres of land and sea in Haida Gwaii, an archipelago 80 kilometres off the British Columbia coast. The reserve operates under the 1993 Gwaii Haanas Agreement between the Government of Canada and the Council of the Haida Nation, establishing a cooperative management structure unique in Canadian parks history. The area protects distinct subspecies that evolved in isolation, including the Haida Gwaii black bear, which averages 20% smaller than mainland black bears, and the Haida ermine. The marine component, established in 2010, protects hydrothermal vent ecosystems at depths exceeding 2,000 metres, where water temperatures reach 300 degrees Celsius. Scientists have identified 57 taxa living near these vents, including six species found nowhere else on Earth.
The Canadian Wildlife Service, established in 1947, manages 54 National Wildlife Areas covering 12,750 square kilometres and 92 Migratory Bird Sanctuaries covering 11,400 square kilometres. These areas operate under the Canada Wildlife Act and the Migratory Birds Convention Act, signed with the United States in 1916. The Convention protects more than 1,000 species of birds that cross the Canada-US border during migration. The Service monitors populations of species including the lesser snow goose, which increased from approximately 800,000 individuals in the 1960s to more than 15 million by 2015, creating overgrazing pressure on Arctic and sub-Arctic breeding grounds covering an estimated 25,000 square kilometres of coastal habitat. In response, the Service implemented conservation harvest measures in 1999, allowing extended hunting seasons and increased bag limits to reduce population growth.
The North American Waterfowl Management Plan, signed by Canada and the United States in 1986 and expanded to include Mexico in 1994, coordinates wetland conservation across the continent. In Canada, the plan operates through organizations including Ducks Unlimited Canada, which has conserved more than 27,000 square kilometres of wetland habitat since its founding in 1938. The plan addresses the loss of 70% of wetlands in southern Canada since 1800, with losses exceeding 85% in some prairie regions. The prairie pothole region, extending across southern Manitoba, Saskatchewan, and Alberta, contains millions of small wetlands covering approximately 300,000 square kilometres and produces 50% to 80% of North American waterfowl during years with adequate precipitation. Conservation easements now protect more than 5,000 square kilometres of this habitat through agreements with private landowners.
Jasper National Park, established in 1907 and covering 11,000 square kilometres, protects the most southerly caribou population in the world within the Columbia Mountain range. This population, classified as the southern mountain caribou ecotype, declined from approximately 120 individuals in the 1960s to fewer than 10 by 2024. Parks Canada implemented predator reduction measures targeting wolves in 2020, removing 13 wolves from the Tonquin Valley to reduce predation on remaining caribou. The park also protects approximately 200 grizzly bears, monitored through DNA analysis of hair samples collected at rub trees and barbed wire sites. Studies between 2004 and 2019 identified 180 individual bears through genetic analysis, indicating a stable or slightly increasing population.
Nahanni National Park Reserve, designated a UNESCO World Heritage Site in 1978, protects 30,000 square kilometres along the South Nahanni River in the Northwest Territories. The park contains Virginia Falls, which drops 92 metres—twice the height of Niagara Falls. The park expanded from its original 4,766 square kilometres to its current size in 2009, protecting the entire 563-kilometre watershed of the South Nahanni River. This expansion followed consultations with the Dehcho First Nations, whose traditional territory encompasses the park. The reserve protects Dall's sheep populations estimated at 1,500 individuals across high-elevation ranges, woodland caribou in forested valleys, and mountain goats on cliff faces. The park's northern latitude at 61 to 62 degrees north produces continuous daylight from mid-May to late July and continuous darkness from late November to mid-January.
The Sable Island National Park Reserve, established in 2013, protects 34 square kilometres of sand dunes on Sable Island, located 290 kilometres southeast of Halifax in the Atlantic Ocean. The island measures 42 kilometres long and averages 1.5 kilometres wide, with elevations reaching 35 metres. The island supports approximately 500 feral horses, descendants of animals introduced in the 1750s, now protected under the Canada National Parks Act. The horses have no natural predators and their population self-regulates through resource availability, with die-offs during severe winters and population increases following mild years. The island also hosts the world's largest breeding colony of grey seals, with approximately 50,000 pups born annually between late December and mid-February. Scientists have monitored this population continuously since 1960, documenting population growth from approximately 100,000 individuals in the 1960s to more than 400,000 by 2016.
Gros Morne National Park in western Newfoundland protects 1,805 square kilometres and became a UNESCO World Heritage Site in 1987 for geological significance. The park exposes sections of the Earth's mantle through a process called obduction, where oceanic crust thrust onto continental crust approximately 485 million years ago during the closure of the Iapetus Ocean. The Tablelands formation presents serpentinized peridotite from the Earth's mantle, creating soil conditions with high magnesium and low calcium that support only specialized plant species. The park protects the northern limit of several plant species including pitcher plant and bunchberry, and the southern limit of Arctic species including Arctic hare. Moose, introduced to Newfoundland in 1878 and 1904 when four animals were released, now number approximately 110,000 across the island, with densities in some areas of Gros Morne reaching three animals per square kilometre—among the highest moose densities recorded globally.
The Polar Bear Provincial Park in northern Ontario, established in 1970, protects 24,087 square kilometres of Hudson Bay lowlands including the largest peatland in North America. The park remains roadless and accessible only by air, with no visitor facilities. The park protects denning habitat for polar bears, with approximately 300 maternity dens established annually across a 30,000-square-kilometre region extending from James Bay to Hudson Bay. Female bears excavate dens in deep snowdrifts along riverbanks and peat ridges between November and December, remaining underground with cubs until March or April. The park also protects habitat for approximately 16,000 lesser snow geese that nest in colonies along the Hudson Bay coast, and breeding areas for several shorebird species including red knot, which declined by 75% in Atlantic populations between 1982 and 2016.
Wapusk National Park, established in 1996 and covering 11,475 square kilometres in northern Manitoba, protects the world's largest known polar bear maternity denning area. Approximately 1,000 to 2,000 polar bears from the Western Hudson Bay population, estimated at 842 individuals in 2016, pass through the park annually. Females enter dens between October and November and emerge with cubs between February and March. Scientists have tracked denning locations since the 1970s, documenting a southward shift in den locations averaging approximately 30 kilometres over three decades, correlated with earlier sea ice breakup dates. Hudson Bay ice breakup has advanced by approximately three weeks since 1979, reducing the hunting season for bears and contributing to a population decline from 1,194 bears in 1987 to 842 in 2016. Adult female body condition has declined significantly, with average body mass decreasing from approximately 290 kilograms in 1980 to 240 kilograms in 2015.
The Marine Conservation Targets initiative, announced in 2015, committed Canada to protecting 10% of marine and coastal areas by 2020. Canada achieved 13.8% protection by December 2020 through establishment of marine protected areas, marine refuges, and other effective area-based conservation measures. The Hecate Strait and Queen Charlotte Sound Glass Sponge Reefs Marine Protected Area, established in 2017 off the British Columbia coast, protects 2,410 square kilometres of reef structures built by glass sponges. These reefs, formed by three species of hexactinellid sponges, grow to heights of 19 metres and extend across approximately 1,000 square kilometres of seafloor at depths between 140 and 240 metres. The reefs were thought extinct for 40 million years until their discovery in Hecate Strait in 1987. The reefs grow approximately 1 centimetre per year and provide habitat for 119 fish species including commercially important species such as Pacific rockfish.
Algonquin Provincial Park, established in 1893 and covering 7,653 square kilometres in central Ontario, protects the southernmost population of wolves in eastern North America. Scientists have studied Algonquin wolves continuously since 1959, with research conducted by John and Mary Theberge and subsequently by Brent Patterson documenting pack sizes ranging from two to ten individuals and territories averaging 100 to 150 square kilometres. Genetic analysis published in 2000 and 2016 identified Algonquin wolves as a distinct species, Canis lycaon, diverging from gray wolves approximately 67,000 years ago. The park population numbers approximately 40 to 50 wolves in 10 to 12 packs. The park also protects approximately 3,000 moose, monitored through aerial surveys conducted every five years, and 2,000 to 3,000 beavers, which maintain approximately 4,000 active dams throughout the park's 2,400 lakes and 1,200 kilometres of streams.
The Canadian Marine Protected Areas network includes the Tarium Niryutait Marine Protected Area, established in 2010 and covering 1,750 square kilometres in the Beaufort Sea. The area protects critical summer feeding habitat for beluga whales from the Eastern Beaufort Sea population, estimated at 40,000 individuals—the largest beluga population in Canadian waters. Approximately 10,000 belugas aggregate in the shallow waters of Mackenzie Bay each July, where they molt, calve, and feed on Arctic cod. Inuvialuit hunters harvest approximately 130 to 150 belugas annually under traditional hunting rights protected under the Inuvialuit Final Agreement signed in 1984. The agreement established the first comprehensive land claim in Canadian Arctic regions and recognized Inuvialuit rights to harvest wildlife for subsistence, requiring integration of traditional knowledge into wildlife management decisions.
The Agreement on the Conservation of Polar Bears, signed in 1973 by Canada, Denmark, Norway, the Soviet Union, and the United States, established protections prohibiting recreational hunting and limiting harvest to Indigenous peoples and licensed sport hunters. Canada's polar bear population, estimated at 17,000 individuals across 13 subpopulations in 2018, represents approximately 60% of the global population. The Nunavut Wildlife Management Board allocates harvest quotas through a community-based management system established under the Nunavut Land Claims Agreement signed in 1993. The Southern Hudson Bay subpopulation declined from 1,000 individuals in the 1980s to approximately 780 by 2011, leading to harvest reductions from 56 bears annually in 2007 to 23 by 2015. The Davis Strait subpopulation increased from approximately 850 individuals in the 1970s to 2,158 by 2007 before declining to 1,676 by 2018, with harvest quotas adjusted accordingly from 88 bears to 66.
Yoho National Park, established in 1886 and covering 1,313 square kilometres in the Rocky Mountains of British Columbia, protects the Burgess Shale fossil beds discovered by Charles Walcott in 1909. The shale preserves soft-bodied organisms from the Cambrian period approximately 508 million years ago, including 120 species with no modern analogues. The fossil beds occur in a layer approximately 2.5 metres thick at an elevation of 2,300 metres on Mount Field. UNESCO designated the site as part of the Canadian Rocky Mountain Parks World Heritage Site in 1984. Access to the fossil beds requires permits, with Parks Canada limiting visits to approximately 3,000 people annually through guided hikes. The park also protects 225 kilometres of trails, populations of mountain goats estimated at 200 individuals, and wolverines, with camera traps documenting 13 individual wolverines between 2014 and 2019.