There are four oceans on the earth. What ocean is located in the northernmost part of the earth?

The northernmost part of the earth is the Arctic Ocean;

The Arctic Ocean is the smallest, shallowest and coldest ocean in the world. Roughly centered on the Arctic Circle, it is located at the northernmost part of the earth, surrounded by the European continent and the North American continent, and there is a narrow Bering Strait communicating with the Pacific Ocean. Connected to the Atlantic Ocean through the Greenland Sea and many straits, it is the smallest ocean in the world, with an area of only 6,543,805 square kilometers, less than one tenth of the Pacific Ocean. Its depth is1097m, and its deepest point is 5499m. Ancient Greece once called it "the ocean facing Ursa major". 1845, named by the Geographical Society of London, UK, translated into Arctic Ocean in Chinese. Mbth Arctic comes from Greek, which means the ocean facing Ursa major. ) 20 12 On August 25th, the sea ice area of the Arctic Ocean reached the smallest in the observation history.