When her three-person submersible descended more than 30,000 feet into one of the Pacific Ocean’s deepest trenches, Mengran Du wasn’t sure what they would find. What she saw, she recalled, was ...

From deep sea ghost sharks to symbiotic worms and unusual crustaceans, scientists have identified 1,121 new marine species in ...

Thousands of meters below the ocean's surface lurk some gigantic creatures, much larger than their shallow-water brethren. Scientists have a few hunches for why this happens, but the debate continues.

Researchers have uncovered surprising evidence that the deep ocean’s carbon-fixing engine works very differently than long assumed. While ammonia-oxidizing archaea were thought to dominate carbon ...

But it isn’t doing it alone; for a month starting this week, it will deploy two oblong neon submersibles as the project’s special agents, sending them nearly 6,000 meters down to hop along the ...

When I set sail on the MV NorSky in the summer of 2008 to probe the depths of Manus Basin off the coast of Papua New Guinea, I believed in the promise of deep-sea mining. As an early-career deep-sea ...