Far below the waves, engineers are quietly testing a vision that treats the seabed as a vast energy vault rather than an empty expanse. The idea is to sink giant hollow concrete spheres to the ocean ...

A new underwater energy storage system could help solve renewable power’s biggest challenge of storing excess electricity.

Seabed 2030 aims to map the entirety of the ocean floor by 2030, but is it a possible endeavour – and what have they found so far?

Scientists present at the latest effort to hash out international rules for deep-sea mining say it's unclear if it's possible to restore damaged seafloor ecosystems—or how long it would take. One of ...

Researchers say the polymetallic nodules that mining companies hope to harvest from the deep-ocean seafloor may be a source of oxygen for the animals, plants and bacteria that live there. This ...

The ocean floor has billions of tons of rocks filled with important rare metals used for green technology. But a growing list of countries and corporations are calling for a moratorium on deep-sea ...

Resting on the bottom of the ocean are potato-sized nodules of valuable minerals that are more or less up for grabs. Multiple corporations and some nations are racing to build deep-sea drones that can ...

An international team of researchers, including a Northwestern University chemist, has discovered that metallic minerals on the deep-ocean floor produce oxygen—13,000 feet below the surface. The ...

Australian sea lions wearing video cameras showed scientists a whole new world on the ocean floor. The footage revealed surprisingly diverse habitats like sponge gardens, coral reefs, and kelp reefs.