Researchers identified some possible new species and said they “still don’t fully understand what’s down there.” ...

A remotely operated vehicle ventured to the depths of the ocean off the coast of southern New Zealand and captured “mesmerizing” footage of the never-before-seen ecosystems thriving in the ...

The deep sea begins at about 200 meters below sea level, where light starts to diminish in a region called the twilight zone.

Only a tiny fraction of the deep ocean is explored, leaving 66% of Earth’s surface largely unseen. Researchers urge global, ...

Researchers say our understanding of Earth’s largest biome is based on a tiny, unrepresentative sample dominated by just a ...

Researchers argue that expanding deep-sea exploration is vital to understanding and managing these marine habitats ...

A new study finds that humans have visually explored just 0.001 per cent of the deep seafloor - leaving vast areas unknown and raising concerns about biodiversity, climate, and deep sea mining ...

Earth's surface is mostly deep ocean, but a new study reveals just how little we have glimpsed of the floor of our planet's ...

The results showed evident geographic disparities in deep-sea exploration. Almost 65% of sightings were from waters around ...

The deep sea refers to the part of the ocean below 200 meters (656 ft.), at which light begins to disappear. Despite making up more than 90% of the Earth’s marine environment, much of the deep-sea ...