Ocean Ocean An ocean () is a body of saline water that composes much of a planet's hydrosphere. On Earth, an ocean is one of the major conventional divisions of the World Ocean. These are, in descending order by area, the Pacific, Atlantic, Indian, Southern (Antarctic), and Arctic Oceans. The word "ocean" is often used interchangeably with "sea" in American English. Strictly speaking, a "sea" is a body of saline water (generally a division of the world ocean) partly or fully enclosed by land, though "the sea" refers also to the oceans. Saline water covers approximately and is customarily divided into
The Greatest Race on Earth The Greatest Race on Earth in July 2009, bringing the competition to a close. The Greatest Race on Earth The Greatest Race on Earth (GROE) was a four-part series of marathon races in a relay format, which included the Nairobi Marathon, Singapore Marathon, Mumbai Marathon and Hong Kong Marathon. It was created and sponsored by Standard Chartered in 2005. The total prize pool for the 2006–07 series was US$1.5 million. The competition was won by the team of four athletes who had the lowest cumulative time across the four marathons, with each team member competing in only one marathon as