Oeans

From space, our planet appears blue because the majority of its surface is covered by oceans and seas. There are five "great" oceans: the Atlantic, the Pacific, and the Indian, which all merge into the Southern Ocean around Antarctica, and the Arctic Ocean which comprises the northern parts of the Atlantic and Pacific. The deepest places on Earth are ocean trenches, where the ocean floor plunges so steeply that the waters above could easily swallow Mount Everest.