When hundreds of eerily perfect circles were discovered on the bottom of the Mediterranean Sea, theories abounded about what ...

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 ...

By David StockIn a flooded cave system in the Mexican state of Quintana Roo on the Yucatán peninsula, a manatee mother swims ...

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 ...

The underwater caves of the Yucatán Peninsula are a window to the distant past. Through two million years and over multiple glaciation cycles, these caves have been transformed. When the sea ...

In a flooded cave system in the Mexican state of Quintana Roo on the Yucatán peninsula, a manatee mother swims up to cave diver Klaus Thymann, who captured stunning footage and images of these ...

The images are stunning ... In the film, he gracefully navigates underwater caves and leaps off rocks and coral as though he were a natural part of the ecosystem. “I have this feeling that ...

The caves provide crucial habitats for a variety of marine species. Their dark, secluded environments offer safe breeding grounds for fish, invertebrates, and other underwater creatures. These ...