Oceans & Seas
This general category includes a selection of more specific topics.
Oceans & Seas Encyclopedia Articles
See articlesFeatured Articles
Caspian Sea
Caspian Sea, world’s largest inland body of water. It lies to the east of the Caucasus Mountains and to the west of the vast steppe of Central Asia. The sea’s name derives from the ancient Kaspi peoples,...
Mediterranean Sea
Mediterranean Sea, an intercontinental sea that stretches from the Atlantic Ocean on the west to Asia on the east and separates Europe from Africa. It has often been called the incubator of Western civilization....
Atlantic Ocean
Atlantic Ocean, body of salt water covering approximately one-fifth of Earth’s surface and separating the continents of Europe and Africa to the east from those of North and South America to the west....
Aral Sea
Aral Sea, a once-large saltwater lake of Central Asia. It straddles the boundary between Kazakhstan to the north and Uzbekistan to the south. The shallow Aral Sea was once the world’s fourth largest body...
Yellow Sea
Yellow Sea, large inlet of the western Pacific Ocean lying between mainland China on the west and north and the Korean peninsula on the east. It is situated to the north of the East China Sea, which it...
Red Sea
Red Sea, narrow strip of water extending southeastward from Suez, Egypt, for about 1,200 miles (1,930 km) to the Bab el-Mandeb Strait, which connects with the Gulf of Aden and thence with the Arabian Sea....
Sea of Okhotsk
Sea of Okhotsk, northwestern arm of the Pacific Ocean, bounded on the west and north by the east coast of Asia from Cape Lazarev to the mouth of the Penzhina River, on the east and southeast by the Kamchatka...
Arabian Sea
Arabian Sea, northwestern part of the Indian Ocean, covering a total area of about 1,491,000 square miles (3,862,000 square km) and forming part of the principal sea route between Europe and India. It...
Pacific Ocean
Pacific Ocean, body of salt water extending from the 60° S parallel in the south to the Arctic in the north and lying between the continents of Asia and Australia on the west and North America and South...
Arctic Ocean
Arctic Ocean, smallest of the world’s oceans, centring approximately on the North Pole. The Arctic Ocean and its marginal seas—the Chukchi, East Siberian, Laptev, Kara, Barents, White, Greenland, and Beaufort...
Northwest Passage
Northwest Passage, historical sea passage of the North American continent. It represents centuries of effort to find a route westward from the Atlantic Ocean to the Pacific Ocean through the Arctic Archipelago...
Sea of Japan
Sea of Japan, marginal sea of the western Pacific Ocean. It is bounded by Japan and Sakhalin Island to the east and by Russia and Korea on the Asian mainland to the west. Its area is 377,600 square miles...
Bering Sea and Strait
Bering Sea and Strait, northernmost part of the Pacific Ocean, separating the continents of Asia and North America. To the north the Bering Sea connects with the Arctic Ocean through the Bering Strait,...
Caribbean Sea
Caribbean Sea, suboceanic basin of the western Atlantic Ocean, lying between latitudes 9° and 22° N and longitudes 89° and 60° W. It is approximately 1,063,000 square miles (2,753,000 square km) in extent....
South China Sea
South China Sea, arm of the western Pacific Ocean that borders the Southeast Asian mainland. It is bounded on the northeast by the Taiwan Strait (by which it is connected to the East China Sea); on the...
Indian Ocean
Indian Ocean, body of salt water covering approximately one-fifth of the total ocean area of the world. It is the smallest, geologically youngest, and physically most complex of the world’s three major...
Black Sea
Black Sea, large inland sea situated at the southeastern extremity of Europe. It is bordered by Ukraine to the north, Russia to the northeast, Georgia to the east, Turkey to the south, and Bulgaria and...
Baltic Sea
Baltic Sea, arm of the North Atlantic Ocean, extending northward from the latitude of southern Denmark almost to the Arctic Circle and separating the Scandinavian Peninsula from the rest of continental...
North Sea
North Sea, shallow, northeastern arm of the Atlantic Ocean, located between the British Isles and the mainland of northwestern Europe and covering an area of 220,000 square miles (570,000 square km). The...
Persian Gulf
Persian Gulf, shallow marginal sea of the Indian Ocean that lies between the Arabian Peninsula and southwestern Iran. The sea has an area of about 93,000 square miles (241,000 square km). Its length is...