- Ocean - Wikipedia
Oceans are thought to have formed in the Hadean eon and may have been the cause for the emergence of life Plate tectonics, post-glacial rebound, and sea level rise continually change the coastline and structure of the world ocean
- What are the 5 Oceans of the World? - Earth How
Since the year 2000, the International Hydrographic Organization (IHO) started recognizing 5 oceans: Pacific, Atlantic, Indian, Arctic and Southern Ocean
- How Many Oceans Are There In The World? - WorldAtlas
For much of recorded history, Earth was said to have four named oceans: the Atlantic, Pacific, Indian, and Arctic However, many countries—including the United States —now recognize the Southern (Antarctic) Ocean as the fifth
- Ocean | Definition, Distribution, Map, Formation, Facts | Britannica
However, those conducting oceanic research generally recognize the existence of five major oceans: the Pacific, Atlantic, Indian, Southern, and Arctic oceans Arbitrary boundaries separate these bodies of water, but they are largely defined by the continents that frame them
- How many oceans are there? - NOAAs National Ocean Service
While there is only one global ocean, the vast body of water that covers 71 percent of the Earth is geographically divided into distinct named regions The boundaries between these regions have evolved over time for a variety of historical, cultural, geographical, and scientific reasons
- 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
- Ocean Facts - Oceanic Society
Learn about the ocean and its inhabitants, from sea turtles to whales The ocean is essential to life on Earth It covers more than 70% of our planet and holds 96 5% of all water It regulates our climate, generates half of Earth's oxygen, and is home to millions of species
- All About the Ocean - National Geographic Society
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
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