The Atlantic Ocean is the second largest body of water in the world and covers one-fifth of the Earth’s surface! With the area of approximately 82 million square kilometres not including its surrounding seas and bays. When the Mediterranean, Black, Baltic, North, Norwegian-Greenland, and Caribbean Seas, Baffin and Hudson Bays and the Gulf of Mexico are also considered, its area rises to about 106 million square kilometres. It is » Read more: Atlantic Ocean Facts and Figures