The large body of water located north of Russia is the Arctic Ocean. It is the smallest and shallowest of the world's five major oceans, bordered by countries like Russia, Canada, and Greenland. The Arctic Ocean is characterized by its cold climate and ice-covered waters, particularly in winter. This ocean plays a crucial role in the Earth's climate system and supports diverse marine life, though it faces significant environmental challenges due to climate change and melting sea ice. It also serves as a key route for shipping and fishing.