Robotic and autonomous underwater vehicles have collected vast quantities of footage from the deep sea, but most of it hasn’t ...

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 ...

Scientists have found that oceanic manta rays routinely make extreme dives of more than 1,200 meters – three-quarters of a mile – but it's not to feed, nor is it happening everywhere in deep water.

Only a scattering of light penetrates the deep water, more than 300 feet beneath the ocean surface off the coast of Guam. It’s like twilight to the human eye, even in the middle of the day. This part ...

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A team of experts has specified certain ocean areas that should be protected to increase shark and ray populations. They identified 816 areas and described them in a report published by the IUCN. The ...

Sixty-five per cent of the exploratory dives into the deep have taken place within 200 nautical miles of either the US, Japan ...