Arctic Archipelago

Geography and Geology

The archipelago stretches about 2,400 kilometres from east to west and 1,900 kilometres from the mainland to its northernmost point at Cape Columbia on Ellesmere Island. It is bounded by the Beaufort Sea to the west, the Arctic Ocean to the northwest, Greenland, Baffin Bay and Davis Strait to the east, and Hudson Bay and the mainland to the south. The islands are separated by a complex series of waterways that make up the Northwest Passage, with major channels like Parry Channel dividing the northern Queen Elizabeth Islands from the rest of the archipelago. The eastern islands, including Baffin, Devon, Ellesmere and Axel Heiberg, are mountainous and contain the northern extent of the Canadian Shield, covered in places by Paleozoic rocks. These highlands host ice caps containing about 75 percent of Canada's glacier ice. The northern and western regions, including most of the Queen Elizabeth Islands, consist of younger, folded sedimentary rocks creating dramatic scenery, while the central and western islands are generally flat lowlands composed of sedimentary rocks from the Arctic Platform. This geological diversity supports mineral deposits like gold and diamonds in Shield areas, and oil, natural gas and coal reserves in sedimentary basins.

History and Sovereignty

The first human inhabitants were the Paleo-Eskimos, who arrived around 2500 BCE. They were later replaced by the Thule people, ancestors of the modern Inuit, between 1000 and 1500 CE. European claims began with the explorations of Martin Frobisher in the 1570s, with the southern part of Baffin Island he claimed being named Meta Incognita by Queen Elizabeth I. British claims over the islands were transferred to Canada in 1880, establishing Canadian sovereignty. The area was administered as part of the District of Franklin from 1895 until the creation of Nunavut in 1999. Canada asserts that all waterways of the Northwest Passage are Canadian Internal Waters, a position contested by many other nations who view them as international straits. This disagreement continues to raise Canadian concerns regarding environmental protection, security and sovereignty.

Climate and Environmental Significance

The climate across the archipelago is uniformly Arctic, characterized by long, severe winters and short, cool summers. The terrain is predominantly tundra, except in mountainous regions. This region is a critical component of the global climate system. The extensive ice caps and glaciers on the eastern islands hold a significant volume of the world's land ice, not including the massive ice sheets of Greenland and Antarctica. Scientific models indicate that melting ice in the archipelago is a contributor to global sea level rise, with estimates projecting it could add 3.5 centimetres by the year 2100. The area also contains what is known as the Last Ice Area, a region where summer sea ice is projected to persist the longest as the climate warms, serving as a vital refuge for ice-dependent species like polar bears and seals.

Human Settlement and Population

Human settlement in the archipelago is extremely sparse and scattered, with the vast majority of its 36,563 islands being uninhabited. As of 2021, the total population across all islands was 23,073. Only 11 islands have permanent settlements, which are predominantly coastal Inuit communities. Baffin Island is not only the largest island but also the most populous, with 13,309 residents. Other populated islands include Victoria Island and Ellesmere Island. Communities are small and isolated, with economies traditionally based on hunting, fishing and increasingly, tourism and scientific research.

Natural Wonders and Attractions

The Arctic Archipelago is home to spectacular natural features that highlight its geological diversity and ecological richness. Mount Asgard, a 2,105 metre tall granite peak with distinctive twin peaks, rises in the Baffin Mountains. Dramatic hoodoos, formed by millions of years of erosion, can be found on the Borden Peninsula and Bylot Island. The Haughton Impact Crater on Devon Island, a 23 kilometre wide scar from a meteorite strike 39 million years ago, is often used as a Mars analogue for space agency research. Cunningham Inlet on Somerset Island hosts thousands of beluga whales each summer for calving and socializing. Lake Hazen on Ellesmere Island is the largest freshwater lake entirely above the Arctic Circle, creating a thermal oasis in the polar desert. Fossil forests on Axel Heiberg Island and at Strathcona Fiord, containing 40 to 50 million year old petrified stumps, provide evidence of a much warmer ancient climate. Prince Leopold Island, with its 250 metre high cliffs, is a critical summer nesting site for vast colonies of migratory seabirds.

Flora and Fauna

The flora of the archipelago is adapted to the harsh Arctic conditions, primarily consisting of tundra vegetation like mosses, lichens, grasses and hardy flowering plants. In localized areas such as the Lake Hazen thermal oasis, plant life is more abundant. Recent botanical studies have detailed the floristic diversity in places like Agguttinni Territorial Park, Nunavut's newest and largest territorial park. Animal life includes well-known Arctic species. Marine mammals are prevalent, with beluga whales, narwhals, seals and polar bears. The region is a crucial summer destination for numerous migratory bird species, which nest on coastal cliffs and islands. Land mammals include muskoxen, Arctic foxes and caribou, while freshwater ecosystems, such as Lake Hazen, support populations of Arctic char, often the only fish species present.

Economic and Scientific Activity

Economic activity in the archipelago is limited but includes subsistence hunting and fishing by Inuit communities, a growing tourism sector focused on wildlife viewing and adventure travel, and scientific research. The region's mineral and energy resources, including gold, diamonds, oil and natural gas found in its varied geological formations, hold potential for future development but are challenging to access. Scientific research is a significant activity, driven by the region's sensitivity to climate change. Researchers study glaciology, permafrost thaw, marine ecosystems and atmospheric chemistry. The Haughton Impact Crater on Devon Island serves as a unique planetary analogue site, where space agencies test equipment and protocols for future missions to Mars. Ongoing exploration and mapping continue to enhance understanding of this remote and vital part of Canada.

Questions about Arctic Archipelago

How many islands are in the Canadian Arctic Archipelago?

The Canadian Arctic Archipelago consists of 36,563 islands in total. Of these, 94 are classified as major islands, meaning they are larger than 130 square kilometres. The remaining 36,469 are considered minor islands. This vast collection of landforms covers a combined area of approximately 1.4 million square kilometres north of the Canadian mainland.

Why is the Northwest Passage important?

The Northwest Passage is a sea route through the islands of the archipelago connecting the Atlantic and Pacific Oceans. It has historical significance for exploration. Canada considers its waterways to be internal Canadian waters, which is important for sovereignty, environmental protection and security. This claim is disputed by other maritime nations who view them as international waters.

What are some notable natural features to see?

The archipelago contains many dramatic natural wonders. These include Mount Asgard's twin peaks on Baffin Island, the otherworldly hoodoos on Bylot Island and the Mars-like Haughton Impact Crater on Devon Island. Cunningham Inlet attracts thousands of beluga whales each summer, Lake Hazen is the Arctic's largest lake, and fossil forests on Axel Heiberg Island reveal a warmer prehistoric climate. Prince Leopold Island is a spectacular seabird colony.

How is climate change affecting the Arctic Archipelago?

The archipelago is experiencing significant effects from climate change, including warming temperatures and melting ice. Its extensive ice caps and glaciers, which hold a substantial portion of the world's land ice, are retreating. This melt contributes to global sea level rise, with estimates suggesting it could add 3.5 centimetres by 2100. Thinning sea ice also affects ecosystems, wildlife migration patterns and the navigability of the Northwest Passage.

What is the largest island in the Arctic Archipelago?

Baffin Island is the largest island in the Arctic Archipelago and the fifth largest island in the world. It is larger in area than the entire United Kingdom. The archipelago contains six of the world's 30 largest islands, with other major islands being Victoria, Ellesmere, Banks, Devon, Axel Heiberg, and Melville. Baffin Island also has the largest human population in the region, with 13,309 people, accounting for over half of the archipelago's total population. These islands are separated by large channels that form part of the Northwest Passage.

Who lives in the Arctic Archipelago?

The inhabitants of the Arctic Archipelago are predominantly Inuit, the descendants of the Thule people who arrived between 1000 and 1500 CE. As of 2021, the total population across all islands is 23,073 people. Human settlement is extremely thin and scattered, being confined to coastal communities on just 11 of the more than 36,000 islands. The largest population is on Baffin Island, which is home to 13,309 people, representing 56.51 percent of the archipelago's population. These communities are located within the Canadian territories of Nunavut and the Northwest Territories.

Sources: Wikipedia and current public reporting, checked by the Your Space Hamilton desk. Last updated 2026-10-22.