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. As ...

(CNN) — Just as Earth’s land surface has enormous peaks and valleys, the oceanic world has similarly varied topography. Perhaps the most intriguing of these features is the Mariana Trench — a chasm in ...

Chinese scientists plunged a submersible 30,000 feet under the ocean's surface and found new chemosynthetic communities in ...

Deepest Ocean Trench: The Mariana Trench is the deepest ocean trench in the world. It represents the lowest and darkest part of Earth’s oceans, reaching depths that are deeper than the height of Mount ...