The Arctic Ocean is the smallest and shallowest ocean in the world. It is also almost completely landlocked— surrounded by North America, Europe, and northern Asia.View More About the Arctic Ocean
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.
The Pacific Ocean is the largest ocean in the world. It covers more than a third of the entire planet, and reaches from the far north of the Northern Hemisphere to the far south of the Southern Hemisphere. Th e Pacific Ocean is so big that all the continents and almost all of the other oceans could fit into it.View More About the Pacific Ocean