A map showing the five main oceans of the world.

An ocean is a large, body of water between continents. Oceans are extremely big and they join smaller seas together. Oceans (or marine) cover 70% of Earth. There are five main oceans: the Pacific Ocean, the Atlantic Ocean, the Indian Ocean, the Southern Ocean, and the Arctic Ocean.The largest ocean is the Pacific Ocean. The smallest ocean is the Arctic Ocean.While Many types of animals live in oceans, such as carp, crabs, starfish, sharks, and whales.Different water movements separate the Southern Ocean from the Atlantic, Pacific and Indian Oceans. The Southern Ocean is also called the Antarctic Ocean, because it covers the area around Antarctica.