The deep ocean is a vast reservoir of biodiversity that harbors unique species, communities, and ecosystems,” write the authors of a new study. We tend to think of the deep ocean as cold, dark, and ...

This story appears in the August 2010 issue of National Geographic magazine. We sink into Stargate, sweeping the void with our dive lights. Fifty feet from the surface looms a pale haze, less ...

A team of explorers rappelled into the shaft-like cave and found a “pinkish” animal living in a cold river of the “deep dark zone.” Take a look.

Editor’s note: This story originally published in January 2021. It’s raining, but there isn’t a cloud in the sky. Crystal-clear droplets break on my shoulders as I take off my hat, close my ...

This story appears in the March 2017 issue of National Geographic magazine. ‘Don’t worry, you can’t get lost down here.’ Larisa Pozdnyakova’s words, in her thick Russian accent, float to ...

There is no light deep in the rocky world of caves - but there is an abundance of animals specially adapted to the challenge of life in total darkness. There are caves all over the planet, but only a ...