What if we found the way to drain all the Earth’s oceans through some mysterious portal at the bottom of the Mariana Trench? Ocean water makes up 70% of the Earth’s surface. How much liquid is that, ...

Marine researchers exploring extreme depths say they have discovered an astonishing deep-sea ecosystem of chemosynthetic life that’s fueled by gases escaping from fractures in the ocean bed. The ...

Half of Earth’s oceans are more than 3.2km deep. Beneath them lie cavernous plains untouched by sunlight, vast gaping trenches made by Earth’s tectonic plates shifting, and ranges of underwater ...

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.

Scientists have uncovered why big predators like sharks spend so much time in the ocean’s twilight zone. The answer lies with mid-sized fish such as the bigscale pomfret, which live deep during the ...

Drilling for minerals deep in the ocean could have immense consequences for the tiny animals at the core of the vast marine food web—and ultimately affect fisheries and the food we find on our plates, ...