How big is the Arctic Ocean? And other Arctic facts

The Arctic region, covering parts of eight countries and including the 5.4 million square mile Arctic Ocean, is facing severe threats from industrial development and climate change. Warming in the Arctic is occurring up to four times faster than the global average, leading to shrinking sea ice that endangers ice-dependent species like polar bears and threatens to disrupt global ocean currents through glacier melt.

• The Arctic Ocean is the smallest ocean globally, spanning approximately 5.4 million square miles, which is about 1.5 times the size of the United States.
• Climate change is identified as the primary threat to the region, with Arctic warming occurring up to four times faster than the global average. Projections indicate the Arctic may become seasonally ice-free within the current century.
• The loss of sea ice directly impacts polar bears, which rely on the ice for breeding, resting, and hunting seals. This loss of habitat increases the frequency of conflicts between polar bears and human populations as bears spend more time on land.
• Glaciers in the Arctic serve as the planet's largest freshwater reservoir, containing roughly 75 percent of the world's supply. Historical data suggests that significant glacier melt during warmer periods has previously shut down ocean currents around Europe.
• The region is subject to various anthropogenic pressures beyond climate change, including shipping traffic, mining, commercial fisheries management, and oil and gas development.

APA

WWF International (n.d.). How big is the Arctic Ocean? And other Arctic facts. https://www.worldwildlife.org/resources/facts/how-big-is-the-arctic-ocean-and-other-arctic-facts/

Chicago

WWF International. How big is the Arctic Ocean? And other Arctic facts. n.d. https://www.worldwildlife.org/resources/facts/how-big-is-the-arctic-ocean-and-other-arctic-facts/.

Wikipedia

{{cite report |author=WWF International |title=How big is the Arctic Ocean? And other Arctic facts |url=https://www.worldwildlife.org/resources/facts/how-big-is-the-arctic-ocean-and-other-arctic-facts/ |access-date=23 October 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{wwfinternationalndhow, author = {{WWF International}}, title = {{How big is the Arctic Ocean? And other Arctic facts}}, institution = {WWF International}, url = {https://www.worldwildlife.org/resources/facts/how-big-is-the-arctic-ocean-and-other-arctic-facts/}, urldate = {2026-10-23}, note = {Indexed by Climate Insights Directory} }