The deepest point of the Mediterranean Sea, Calypso Deep, was found to be a bit of a dump. That's surprising because we don't ...

A robot submarine has shared footage of the world's deepest point as it continues its search for deep-sea 'aliens' ...

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It appears to be an alien planet. What is the ocean's deepest point? What lives in the Mariana Trench—and what has been discovered recently?

A scientist made a disturbing discovery at the bottom of Challenger Deep which is 35,000 ft below sea level, showing climate ...

The floor of the Calypso Deep − a 5,112-meter-deep trench in the Ionian Sea − holds one of the highest concentrations of ...

This is only the second manned expedition to the ocean's deepest depths - the first took place in 1960. The earlier descent was made by US Navy Lt Don Walsh and Swiss oceanographer Jacques Piccard.

But the size of the shelf and how quickly it descends toward the deepest parts of the ocean, known as the abyssal plain, varies from place to place. Early oceanographers thought the ocean bottom ...

Deep-sea fish thrive in extreme pressure, darkness, and pollution, revealing new survival mechanisms and threats.

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Ocean depth is divided into zones: littoral, bathyal, abyssal and hadal. The deepest part of the ocean, the hadal zone, is anywhere deeper than six kilometres. What is the average depth of the ocean?