Largest Ocean Largest Sea Depth Adventure Location
We provide the information you need about the size, depth and location of every sea and ocean in the world.
Know before you go about the ocean, sea, trench, basin, bay, and your off island adventure.
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RESERVATIONS
       

Name Area Average
depth
Greatest known
depth
Place of
greatest known depth
sq. mi. sq. km ft. m ft. m
1. Pacific Ocean 64,000,000 165,760,000 13,215 4,028 36,198 11,033 Mariana Trench
2. Atlantic Ocean 31,815,000 82,400,000 12,880 3,926 30,246 9,219 Puerto Rico Trench
3. Indian Ocean 25,300,000 65,526,700 13,002 3,963 24,460 7,455 Sunda Trench
4. Arctic Ocean 5,440,200 14,090,000 3,953 1,205 18,456 5,625 7745'N; 175W
5. Mediterranean Sea1 1,145,100 2,965,800 4,688 1,429 15,197 4,632 Off Cape Matapan, Greece
6. Caribbean Sea 1,049,500 2,718,200 8,685 2,647 22,788 6,946 Off Cayman Island
7. South China Sea 895,400 2,319,000 5,419 1,652 16,456 5,016 West of Luzon
8. Bering Sea 884,900 2,291,900 5,075 1,547 15,659 4,773 Off Buldir Island
9. Gulf of Mexico 615,000 1,592,800 4,874 1,486 12,425 3,787 Sigsbee Deep
10. Okhotsk Sea 613,800 1,589,700 2,749 838 12,001 3,658 14610'E; 4650'N
11. East China Sea 482,300 1,249,200 617 188 9,126 2,782 2516'N; 125E
12. Hudson Bay 475,800 1,232,300 420 128 600 183 Near entrance
13. Japan Sea 389,100 1,007,800 4,429 1,350 12,276 3,742 Central Basin
14. Andaman Sea 308,100 797,700 2,854 870 12,392 3,777 Off Car Nicobar Island
15. North Sea 222,100 575,200 308 94 2,165 660 Skagerrak
16. Red Sea 169,100 438,000 1,611 491 7,254 2,211 Off Port Sudan
17. Baltic Sea 163,000 422,200 180 55 1,380 421 Off Gotland
1. Includes Black Sea and Sea of Azov.

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Largest Ocean Largest Sea Depth Adventure Location