The 28-day expedition to this submerged mountain — part of a range called the Nazca Ridge that rests along the Pacific's deep ...

This photo taken on March 26, 2025 shows the Shantou Bay undersea tunnel in Shantou city, South China's Guangdong province. [Photo/Xinhua] An undersea tunnel at a depth of 68 meters beneath the ...

Alexander Behm sails the North Sea and bounces sound waves off its bottom ... Marie Tharp, studying echo soundings, discovers that the Mid-Atlantic Ridge conceals a long rift valley, which ...

After spending nearly 7,000 years buried deep in the mud of the Baltic Sea without light or oxygen, tiny algae have come back ...

A compact, deep-sea, cable-cutting device, capable of severing the world’s most fortified underwater communication or power lines, has been unveiled by China – and it could shake up global ...