How many oceans touch Canada?

Canada has a vast geography that occupies much of the continent of North America, sharing a land border with the contiguous United States to the south and the U.S. state of Alaska to the northwest. Canada stretches from the Atlantic Ocean in the east to the Pacific Ocean in the west; to the north lies the Arctic Ocean. Greenland is to the northeast with a shared border on Hans Island. To the southeast Canada shares a maritime boundary with France's overseas collectivity of Saint Pierre and Miquelon, the last vestige of New France. By total area (including its waters), Canada is the second-largest country in the world, after Russia. By land area alone, however, Canada ranks fourth, the difference being due to it having the world's largest proportion of fresh water lakes. Of Canada's thirteen provinces and territories, only two are landlocked (Alberta and Saskatchewan) while the other eleven all directly border one of three oceans.

Canada is influenced in many ways by the three bordering oceans - Pacific, Arctic and Atlantic - and climate change impacts on the oceans affect Canada's people and economy. All of the world's ocean basins have been warming on average, due to greenhouse gas forcing, and this is expected to continue. The warming is resulting in rising mean sea level and changes in biological systems, including shifting distributions of fisheries and coral reef bleaching in tropical areas. Sea-level rise is projected to continue for several centuries.