The smallest ocean in size is the Arctic Ocean. Situated around the North Pole, it is often considered the most isolated of all the world's oceans, with an area of about 15 million square kilometers (5.8 million square miles). The Arctic Ocean is characterized by its icy conditions and shallow waters, with a unique ecosystem home to various marine species. Its smaller size and location contribute to the significant impact of climate change, affecting its ice coverage and the habitats of wildlife that depend on these cold-water environments.