Only about 5% of the ocean floor has been accurately mapped, leaving deeper undiscovered regions possible.

Redistribute every continent and island into the deepest ocean basins, and Earth would still hold…

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Humans reached 10,916 meters in 1960, then surfaced after a cracked window ended their 20-minute…

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Blue whales dive about 500 meters deep, the same stated depth limit as US Seawolf-class nuclear…

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At 1,000 meters, ocean pressure compares with standing on Venus and quickly kills an unprotected…

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Herbert Nitsch set a 214-meter freediving record on a single breath.

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The Challenger Deep reaches about 10,994 meters, roughly 300 kilometers southwest of Guam.

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The Hadal Zone begins around 6,000 meters, where pressure reaches about 1,100 times surface…

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The ocean averages 4,267 meters deep, yet its trenches extend substantially farther down.

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