These spiny or slimy ocean creatures display an astonishing diversity of appearances, behaviors and lifestyles—and many are ...

Researchers collected more than 43,000 records of dives and assessed the photos and videos to determine how much of the bottom has been seen by humans.

What do we really know about the deep ocean? Whether Earth’s ocean is an ecological paradise teeming with wildlife or a ...

Human eyes have only seen a tiny, tiny, tiny fraction of the areas of the world that are covered by deep water. Scientists ...

The deep sea refers to the part of the ocean below 200 meters (656 ft.), at which light begins to disappear. Despite making ...

Australian scientists aboard the icebreaker ship RSV Nuyina uncovered a host of unique marine creatures during a 60-day expedition near the Denman Glacier in East Antarctica.

Even biologists only capture a glimpse of the lives of whales. There are still many species whose lives are largely a mystery ...

Deep-sea mining could unleash clouds of debris that threaten a mysterious, vital ecosystem we barely understand.

Venture beneath the surface of the ocean and you'll find a world as alien as any far-flung destination. In the darkness and ...

After last week's deadly attack, we take a deep dive into the sharks along Israel's coastline -- from their behavior patterns ...

The disappearance of sea ice in polar regions due to global warming not only increases the amount of light entering the ocean ...