but the underwater sections are simply breathtaking. Located on New Zealand's North Island, these caves are famous for their glowworms that light up the dark tunnels like stars in the night sky.

A group of divers have connected two underwater caverns in eastern Mexico to reveal what is believed to be the biggest flooded cave on the planet, a discovery that could help shed new light on the ...

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 ...

Two Chinese scientific researchers were successfully rescued recently from underwater karst caves in South China's ... he had spent days in a dark, confined space without food and was extremely ...