There seems to be too much of a radioactive element in rocks deep in the Pacific Ocean – how did it get there 10 million years ago?

In 1917, a civil engineer pioneered the first deep-sea vehicle to attempt filming underwater. A century later, we have James ...

was first built on a barge that was fixed at its future underwater location, before being lowered into the sea and fixed to the ocean floor using steel rods. The structure sits partly submerged ...

At a depth of about 5,000 metres, the abyssal zone of the Pacific Ocean has never seen light, yet something does still grow there. Ferromanganese crusts – metallic underwater rocks – grow from ...