Mariana Trench: Deepest Ocean 'teems With Microbes'
An international team of scientists found that the very bottom of the Mariana Trench, which lies almost 11km (7 miles) down in the Pacific Ocean, had high levels of microbial activity.
The underwater canyon was once thought to be too hostile an environment for life to exist.
But this study adds to a growing body of evidence that a range of creatures can cope with the near-freezing temperatures, immense pressures and complete darkness.
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