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GEOGRAPHY
Physical - Hydrology
Deepest Seas
This list features the deepest sea on Planet Earth.
RANK | SEA | MAX DEPTH | AVG. DEPTH |
1 | Caribbean Sea | 7,686 m (25,223 ft) | 2,200 m (7,218 ft) |
2 | Bering Sea | 4,097 m (13,442 ft) | 1,640 m (5,381 ft) |
3 | Weddell Sea | 7,235 m (23,740 ft) | 1,600 m (5,249 ft) |
4 | Gulf of Mexico | 3,787 m (12,428 ft) | 1,585 m (5,200 ft) |
5 | Mediterranean Sea | 5,267 m (17,277 ft) | 1,500 m (4,921 ft) |
6 | Coral Sea | 11,000 m (36,089 ft) | 1,500 m (4,921 ft) |
7 | Arctic Ocean | 5,450 m (17,881 ft) | 1,204 m (3,950 ft) |
8 | Philippine Sea | 10,540 m (34,587 ft) | 1,200 m (3,937 ft) |
9 | Tasman Sea | 3,780 m (12,402 ft) | 1,050 m (3,445 ft) |
10 | South China Sea | 5,016 m (16,460 ft) | 1,024 m (3,360 ft) |
References
British Geological Survey (BGS). (2023) ‘Marine Geophysics and Depth Measurements.’ Available at: https://www.bgs.ac.uk (Accessed: 6 July 2025).
Fairbridge, R.W. (2021) World Atlas of Oceans, 2021 Edition. New York: Springer. ISBN: 9783540426439. (Accessed: 6 July 2025).
Marine Regions. (2023) ‘Seas and Oceans – Marine Depth Data.’ Marine Regions Database. Available at: https://www.marineregions.org (Accessed: 6 July 2025).
National Geographic. (2022) ‘Exploring the Depths of the World's Oceans and Seas.’ Available at: https://www.nationalgeographic.com/environment/oceans/ (Accessed: 6 July 2025).
NOAA (National Oceanic and Atmospheric Administration). (2023) ‘Oceans: The Depth of the Oceans.’ Available at: https://oceanservice.noaa.gov/facts/oceandepth.html (Accessed: 6 July 2025).
World Atlas. (n.d.) ‘Deepest Oceans and Seas.’ Available at: https://www.worldatlas.com/geography/deepest-oceans-and-seas.html (Accessed: 6 July 2025).
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