There is an old saying that “the Earth has six continents and seven seas.” In fact, that generalization is not too far off the mark. Earth has six continental landmasses:
Africa, South America, North America, Eurasia (Europe and Asia occupy a single large landmass), Australia,
and Antarctica. As for the seven seas, there are five great oceanic bodies of water and several smaller seas.
The Atlantic Ocean is the second-largest ocean in the world, about half the size of the Pacific. It is shaped like an “S” and separates Europe and Africa from North and South America.
Th e Atlantic Ocean is home to the world’s longest mountain range, called the Mid-Atlantic Ridge, which stretches 10,000 miles (16,000 kilometers) under the ocean from Iceland all the way to the southern tip of Africa.