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Study on Earth’s Deep Seafloor
May 27 , 2025
3 days
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- Two-thirds of the earth’s surface consists of the deep ocean- parts of the surface 200 m or more below sea level.
- It’s thus the world’s largest as well as least explored ecosystem.
- Till date, the researchers collected 43,681 records of deep-sea visual dives from 34 institutions in 14 countries, spanning activities in 120 exclusive economic zones and the high seas.
- Thus, the researchers concluded that visual observations have covered 0.001% at best of the deep seafloor.
- More than 97% of all dives have been conducted by just five countries — the US, Japan, New Zealand, France, and Germany.
- The ocean’s average depth, about 12,080 ft (3,682 m), makes it virtually very inaccessible.
- Around the two-thirds of the ocean’s 700,000 to 1 million species (excluding microbes) have yet to be identified or described.
- Deep ocean experiences severe cold with an average temperature of only 4°C.
- It is also subject to the extreme pressure, from about 40 to over 110 times the pressure of Earth’s atmosphere.
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