
Ocean - Wikipedia
For practical and historical reasons, it is customary to divide the World Ocean into a set of five major oceans. By convention these are the Pacific, Atlantic, Indian, Arctic, and Southern (Antarctic) oceans.
How Many Oceans Are There In The World? - WorldAtlas
Feb 19, 2025 · Roughly 71 percent of Earth’s surface is covered by saltwater oceans, and the continents themselves hold lakes, rivers, and, in some instances, seas. The largest bodies of water are the …
Ocean | Definition, Distribution, Map, Formation, & Facts | Britannica
Nov 17, 2025 · An ocean is a continuous body of salt water that is contained in an enormous basin on Earth’s surface. The major oceans and their marginal seas cover nearly 71 percent of Earth’s …
What are the 5 Oceans of the World? - Earth How
Nov 9, 2017 · Since the year 2000, the International Hydrographic Organization (IHO) started recognizing 5 oceans: Pacific, Atlantic, Indian, Arctic and Southern Ocean.
Oceans—facts and information | National Geographic
The vast bodies of water surrounding the continents are critical to life on Earth. But overfishing and global warming threaten to leave oceans barren.
All About the Ocean - National Geographic Society
May 27, 2025 · Although the ocean is one continuous body of water, oceanographers have divided it into five principal areas: the Pacific, Atlantic, Indian, Arctic, and Southern Oceans.
How many oceans are there? - NOAA's National Ocean Service
Jun 16, 2024 · Historically, there are four named oceans: the Atlantic, Pacific, Indian, and Arctic. However, most countries - including the United States - now recognize the Southern (Antarctic) as …
Map of the Oceans: Atlantic, Pacific, Indian, Arctic, Southern
Map of Earth's Five Oceans: Although there is only one global ocean, geographers have divided it into five major regions (which are also called "oceans"). They are: the Atlantic Ocean, the Pacific Ocean, …
Earth’s Oceans: Their Role, Environments, and Importance
Jul 24, 2025 · Earth has five major oceans: the Pacific, Atlantic, Indian, Southern (or Antarctic), and Arctic. The Pacific Ocean is the largest and deepest, with an average depth of 4,280 meters and its …
1.1 Overview of the Oceans – Introduction to Oceanography
We often think of Earth in terms of its land area, but in reality 71% of the Earth’s surface is covered by oceans, while only 29% is land. Oceans cover an area of 139 million miles 2 or 361 million km 2, and …