The Deepest Ocean Trenches Are Near Freezing Temperatures

Despite immense pressure, the water in the deepest parts of the ocean, like the Mariana Trench, remains incredibly cold, typically between 1-4°C (34-39°F). This is because sunlight cannot penetrate these depths, and cold, dense surface waters eventually sink to fill these abyssal plains, creating a perpetually frigid environment.

Source

https://en.wikipedia.org/wiki/Mariana_Trench

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Published: March 29, 2026
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Cool Ocean Geography Biology Deep Sea Ocean Trench Mariana Trench Cold Water Marine Life Oceanography

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