From the deep ocean floor to vast underground caverns beneath our feet, these places challenge our understanding of the world.

If you ask most people, they would tell you the bottom of the ocean is a dark and depressing place they wouldn't want to visit. It's often used as a metaphor for those kinds of feelings. But the truth ...

The Pacific Ocean is home to some of the deepest points on the planet. In fact, four of the top six deepest spots in the world can be found in the Pacific. The Pacific's basin is uniquely low, which ...

October 17, 2025 \| Last updated: October 17, 2025. More for You ...

The deepest part of any of the world’s oceans, known as Challenger Deep, is a portion of the Mariana Trench that goes down to ...

NEW YORK (AP) — An underwater voyage has revealed a network of creatures thriving at the bottom of deep-sea ocean trenches. In these extreme environments, the crushing pressure, scant food and lack of ...

This 2020 astronaut photo shows the unusual cetacean-like shape of Belize's Lighthouse Reef. It's home to the famous Great ...