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The majority of life on earth is aquatic.

There are more historic artifacts under the sea than in all the world's museums combined.

Oceans cover more than 70%of the earth's surface.

The Atlantic Ocean is increasing in size.

The deepest known point is The Challenger Deep at around 11,000 m below see level.

At around 30m depth, the water pressure can crush you.

During their deepest dives, a diver's heart rate can dip to only 14 beats per minute; for reference, this is about a third of the rate of a person in a coma.@@