Oceans are the major part of the hydrosphere. The Five Major Oceans are:Pacific Ocean:  It is circular in shape which is surrounded by Asia, Australia, North and South Americas.Atlantic Ocean: It is the second-largest ocean on this planet.Indian Ocean: It is the only ocean named after a country, that is, India and it is almost triangular in shape. Southern Ocean: This ocean surrounds the continent of AntarcticaArctic Ocean:  this ocean is located within the Arctic Circle and surrounds the North Pole.