The World's Largest Underwater Cave in Mexico is Filled With Ancient Mayan Treasures, Baffles Experts Explorers as a part of ...

Take a deep breath and dive below the surface with cave-diving experts and scientists in the video above. Find out what it takes to plunge into the dark and mysterious world of underwater caves. Caves ...

Sistema Sac Actun is the world’s largest underwater cave system. Stretching an astonishing 215 miles, this submerged labyrinth of tunnels, caverns, and crystal-clear waterways is not only a ...

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 ...

According to Sci.News, the findings, recently published in the journal PLoS ONE, suggest that coastal and underwater cave sites in southern Sicily hold important new clues about the path and fate ...

Cenote diving offers a rare opportunity to discover the world's hidden wonders: underwater rivers and caves, nestled beneath ...

A postdoctoral research assistant at Texas A&M University-San Antonio, Calderon Gutierrez explores the underwater caves of Mexico’s Yucatán Peninsula and Cozumel Island to study the strange and ...

But there is hope, says Thymann, and documenting this dense habitat of underwater caves may be the first step in protecting the manatees that live there. Receive a weekly dose of discovery in your ...

From lens focal lengths and fill-flash to portraits, macro or stunning landscapes there are techniques for everyone. Learn how to use metering, considering composition and shoot everything from ...