Feb 19, 2025 · 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 …

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 …

Dec 22, 2025 · However, those conducting oceanic research generally recognize the existence of five major oceans: the Pacific, Atlantic, Indian, Southern, and Arctic oceans. Arbitrary boundaries …

Nov 17, 2023 · Humans have gotten into the habit of separating the one big, continuous, mysterious body of water that covers the globe into sectors that we call oceans. Historically, there were just four …

Sep 4, 2025 · 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 …

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.

The vast bodies of water surrounding the continents are critical to life on Earth. But overfishing and global warming threaten to leave oceans barren.