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Following is a transcript of the video. Narrator: The Mariana Trench is the deepest point on Earth. So deep that if you dropped Mount Everest inside, its peak would still be more than a kilometer ...

In fact, more people have been to the moon than to the bottom of the Mariana Trench. That's because, the Mariana Trench's environment is very hostile. Sunlight cannot penetrate deep water so it's ...

"Mariana Trench: The Deepest Depths ... So like the trench itself, the animals that live there will continue to be mysteries, too. They may be our Earth cousins, but considering how little we know ...