The Atlantic Ocean is the second-largest of the world's oceanic divisions. With a total area of about 106,400,000 square kilometres (41,100,000 sq mi), it covers approximately twenty percent of the Earth's surface and about twenty-six percent of its water surface area. Wikipedia:Atlantic Ocean
The North Atlantic borders the following land masses: a corner of South America, the leeward Caribbean islands, USA Atlantic states, Canadiam Maritime provinces, Greenland, Iceland, countries of western Europe, and countries of north western Africa.
Leeward Caribbean islands
USA Atlantic states
Canadian Maritime provicnes
North western Africa
The South Atlantic borders the following land masses: the eastern countries of South America and the south western countries of Africa.