Major Seas and Oceans of the World With Name, Area, Depth

List Major Seas and Oceans of the World

Water covers more than 70 percent of the Earth’s surface, with the largest body of water, the Pacific Ocean, taking up more than one-third of the planet’s surface.

All of the oceans on Earth are estimated to have a volume of 0.3 billion cubic miles (1.332 billion cubic kilometers) and an average depth of 12,080.7 feet (3,682.2 meters). But the various bodies of water that make up this total ocean area have their own unique characteristics and range in size from the sprawling Pacific to the self-contained Mediterranean.

The following table lists the world’s major oceans and seas, according to area and average depth, including the Pacific Ocean, Atlantic Ocean, Indian Ocean, Southern Ocean, Mediterranean Sea, Arctic Ocean, Caribbean Sea, Bering Sea, and more.

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Name Area Average depth Greatest known Place of greatest known depth
sq. mi. sq. km ft. m ft. m
Pacific Ocean 60,060,700 155,557,000 13,215 4,028 36,198 11,033 Mariana Trench
Atlantic Ocean 29,637,900 76,762,000 12,880 3,926 30,246 9,219 Puerto Rico Trench
Indian Ocean 26,469,500 68,556,000 13,002 3,963 24,460 7,455 Sunda Trench
Southern Ocean1 7,848,300 20,327,000 13,100–16,400 4,000–5,000 23,736 7,235 South Sandwich Trench
Arctic Ocean 5,427,000 14,056,000 3,953 1,205 18,456 5,625 77°45’N; 175°W
Mediterranean Sea2 1,144,800 2,965,800 4,688 1,429 15,197 4,632 Off Cape Matapan, Greece
Caribbean Sea 1,049,500 2,718,200 8,685 2,647 22,788 6,946 Off Cayman Islands
South China Sea 895,400 2,319,000 5,419 1,652 16,456 5,016 West of Luzon
Bering Sea 884,900 2,291,900 5,075 1,547 15,659 4,773 Off Buldir Island
Gulf of Mexico 615,000 1,592,800 4,874 1,486 12,425 3,787 Sigsbee Deep
Okhotsk Sea 613,800 1,589,700 2,749 838 12,001 3,658 146°10’E; 46°50’N
East China Sea 482,300 1,249,200 617 188 9,126 2,782 25°16’N; 125°E
Hudson Bay 475,800 1,232,300 420 128 600 183 Near entrance
Japan Sea 389,100 1,007,800 4,429 1,350 12,276 3,742 Central Basin
Andaman Sea 308,000 797,700 2,854 870 12,392 3,777 Off Car Nicobar Island
North Sea 222,100 575,200 308 94 2,165 660 Skagerrak
Red Sea 169,100 438,000 1,611 491 7,254 2,211 Off Port Sudan
Baltic Sea 163,000 422,200 180 55 1,380 421 Off Gotland
Read Also:  Major Peninsulas of the World

Major Seas and Oceans of the World With Name, Area, Depth
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