"There is an urgent need to better understand our deep-sea biodiversity." Scientists make wild discovery while exploring deep ...

LONDON—For around a decade, the Russian spy ship Yantar has crossed the globe and loitered over undersea cables in what ...

Each colored area on this map represents a different country's mining claim in the Clario-Clipperton zone. Map courtesy International Seabed Authority.

Sir John Ross lowers a line more than a mile into the North Atlantic and hauls up worms and a large sea star. Norwegians haul up from the deep a sea lily, a living fossil previously found only in ...