Divers in Mexico's Yucatan Peninsula say they have discovered the world's largest underwater cave. Underwater archaeologists discovered last week that the cave system known as Sac Actun, located near ...

This incredible submerged cave network is the longest of its kind in the world and plays a vital role in the region. When you purchase through links on our site, we may earn an affiliate commission.

Far below the surface of Mexico’s Yucatán Peninsula, a flooded labyrinth of limestone tunnels has quietly guarded one of the most haunting fossil troves of the Ice Age. In the darkness of a submerged ...

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Scientists found a “golden” sea creature “deep within” underwater caves off Saudi Arabia and discovered a new species, a study said. Photo from Getty / iStockphoto On a coral reef off the western ...