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.
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.
Since the year 2000, the International Hydrographic Organization (IHO) started recognizing 5 oceans: Pacific, Atlantic, Indian, Arctic and Southern Ocean.
have divided it into five principal areas: the Pacific, Atlantic, Indian, Arctic, and Southern Oceans. The Atlantic, Indian, and Pacific Oceans merge into icy waters around Antarctica.
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.
Oceans cover over 70% of Earth’s surface, making them the planet’s largest ecosystem. They hold about 97% of all water on Earth and are vital to life everywhere.
Oceans define our home planet, covering the majority of Earth’s surface and driving the water cycle that dominates our land and atmosphere.
Dive deep into the mysteries of marine life, the impact of human activity on Earth’s oceans, and the efforts to protect these vital ecosystems from threats including pollution, overfishing, and...
The seven named oceans and many seas, bays, and estuaries, are all interdependent and connected as one global ocean. The importance of the ocean to our everyday lives is indisputable.