The oceans cover over 70% of the Earth’s surface. The marine ecosystem is the largest and most abundant in the world. But most of the ocean is permanently dark and incredibly difficult to observe.

The Earth as we know it today is the result of billions of years of geological activity, where continents have shifted, collided, and broken apart over time. But what did Earth look like in its early ...

A photo of the earth and its oceans taken from space. The photo has been changed so we can see all of the earth’s surface in one picture. The Pacific Ocean is the world’s largest ocean. It ...

We have both continents and oceans on Earth — but it didn't have to be this way. ... It lets us see that even the map of the world is full of mystery. Continents and oceans, we have them both.

Director Tommaso Santambrogio’s beautifully realized first feature, Oceans Are the Real Continents (Los Océanos Son Los Verdaderos Continentes), presents a number of intriguing paradoxes: It ...

National Geographic, one of the world’s pre-eminent and most visible mapmaking groups, has officially decreed the existence of a fifth ocean. Called the Southern Ocean, it’s the body of water ...