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Selected panorama
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Orca (Orcinus orca) hunting a Weddell seal in the Southern Ocean -
A view of Filfla and the Mediterranean Sea. Filfla is a small, mostly barren, uninhabited islet 4.5 kilometres (2.8 miles) south of Malta. -
A mother sperm whale and her calf in the Indian Ocean off the coast of Mauritius -
A view of the South China Sea, Bacuit Archipelago, municipality of El Nido, Palawan, Philippines -
Clouds over the Southern Ocean, with continent labels -
A view of the Southern Ocean from Great Ocean Road, Port Campbell, Princetown, Victoria, Australia -
Caesio teres in the South Pacific Ocean in Fiji -
A sea anemone in the Pacific Ocean, Baja California, Mexico -
A view of Myrtos Beach and the Ionian Sea, Cephalonia, Ionian Islands, Greece -
A panorama of Zanzibar, Tanzania, particularly the Stone Town, taken from the Indian Ocean -
Icebergs broken off from glaciers in northern Baffin Bay, Cape York, Greenland -
Satellite view of the Pacific Ocean and the main windward Hawaiian Islands -
A surfer in the Pacific Ocean at the 2010 Mavericks competition, village of Princeton-by-the-Sea, northern California
Introduction
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| Earth's ocean |
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Main five oceans division: Further subdivision: Marginal seas |
The ocean is the body of salt water that covers approx. 70.8% of Earth. In English, the term ocean also refers to any of the large bodies of water into which the world ocean is conventionally divided. The following names describe five different areas of the ocean: Pacific, Atlantic, Indian, Antarctic/Southern, and Arctic. The ocean contains 97% of Earth's water and is the primary component of Earth's hydrosphere; thus the ocean is essential to life on Earth. The ocean influences climate and weather patterns, the carbon cycle, and the water cycle by acting as a huge heat reservoir. (Full article...)
A sea is a large body of salty water. There are particular seas and the sea. The sea commonly refers to the ocean, the wider body of seawater. Particular seas are either marginal seas, second-order sections of the oceanic sea (e.g. the Mediterranean Sea), or certain large, nearly landlocked bodies of water. (Full article...)
Oceanography (from Ancient Greek ὠκεανός (ōkeanós) 'ocean', and γραφή (graphḗ) 'writing'), also known as oceanology, sea science, ocean science, and marine science, is the scientific study of the oceans. It is an Earth science, which covers a wide range of topics, including ecosystem dynamics; ocean currents, waves, and geophysical fluid dynamics; plate tectonics and seabed geology; and fluxes of various chemical substances and physical properties within the ocean and across its boundaries. These diverse topics reflect multiple disciplines that oceanographers utilize to glean further knowledge of the world ocean, including astronomy, biology, chemistry, geography, geology, hydrology, meteorology and physics. Paleoceanography studies the history of the oceans in the geologic past. An oceanographer is a person who studies many matters concerned with oceans, including marine geology, physics, chemistry, and biology. (Full article...)
Selected article -
Seawater, or sea water, is water from a sea or ocean. On average, seawater in the world's oceans has a salinity of about 3.5% (35 g/L, 35 ppt, 600 mM). This means that every kilogram (roughly one liter by volume) of seawater has approximately 35 grams (1.2 oz) of dissolved salts (predominantly sodium (Na+
) and chloride (Cl−
) ions). The average density at the surface is 1.025 kg/L. Seawater is denser than both fresh water and pure water (density 1.0 kg/L at 4 °C (39 °F)) because the dissolved salts increase the mass by a larger proportion than the volume. The freezing point of seawater decreases as salt concentration increases. At typical salinity, it freezes at about −2 °C (28 °F). The coldest seawater still in the liquid state ever recorded was found in 2010, in a stream under an Antarctic glacier: the measured temperature was −2.6 °C (27.3 °F).
Interesting facts -
- The coral Madracis auretenra has been used to study the likely effects of ocean acidification on corals.
- The ocean liner SS Shalom accidentally rammed and bisected the Norwegian tanker Stolt Dagali, sinking the bow of the tanker but not the stern.
- Flashes of light emitted by the sea snail Hinea brasiliana may act as a "burglar alarm".
Selected list articles and Marine habitat topics
| Marine habitats |
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| Coastal habitats |
| Ocean surface |
| Open ocean |
| Sea floor |
- List of oceans
- List of ancient oceans
- List of seas
- List of circumnavigations
- List of cruise lines
- List of largest lakes and seas in the Solar System
- List of marine biologists
- List of marine ecoregions
- List of maritime explorers
- List of naval battles
- List of ocean liners
- List of oceanographic institutions and programs
- List of oldest surviving ships
- List of rogue waves
- List of seafood dishes
- List of submarine topographical features
Tasks
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Here are some tasks awaiting attention:
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General images -
The following are images from various ocean-related articles on Wikipedia.
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In the subpolar gyre of the North Atlantic warm subtropical waters are transformed into colder subpolar and polar waters. In the Labrador Sea this water flows back to the subtropical gyre. (from Atlantic Ocean) -
Marine debris strewn over the beaches of the South Atlantic Inaccessible Island (from Atlantic Ocean) -
Upwelling in the Southern Ocean(from Southern Ocean) -
Manganese nodule (from Southern Ocean) -
Capture of Atlantic northwest cod in million tons (from Atlantic Ocean) -
James Weddell's second expedition in 1823, depicting the brig Jane and the cutter Beaufroy (from Southern Ocean) -
The Antarctic Ocean, as delineated by the draft 4th edition of the International Hydrographic Organization's Limits of Oceans and Seas (2002) (from Southern Ocean) -
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Model of a Fijian drua, an example of an Austronesian vessel with a double-canoe (catamaran) hull and a crab claw sail (from Pacific Ocean) -
The Antarctic Circumpolar Current (ACC) is the strongest current system in the world oceans, linking the Atlantic, Indian and Pacific basins. (from Southern Ocean) -
Banks of the northwest Atlantic (from Atlantic Ocean) -
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1937 delineation (from Southern Ocean) -
Severe cracks in an ice pier in use for four seasons at McMurdo Station slowed cargo operations in 1983 and proved a safety hazard. (from Southern Ocean) -
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Madagascar's Elephant bird, Mauritius's Dodo bird and ostrich (from left to right) (from Indian Ocean) -
A female warty squid (Moroteuthis ingens) (from Southern Ocean) -
The three major cultural areas of the Pacific Ocean islands: Micronesia, Melanesia and Polynesia (from Pacific Ocean) -
Seas that are parts of the Southern Ocean (from Southern Ocean) -
Weddell seals (Leptonychotes weddellii) are the most southerly of Antarctic mammals. (from Southern Ocean) -
Map of the Pacific Ocean during European Exploration, circa 1754. (from Pacific Ocean) -
Walruses on Arctic ice floe (from Arctic Ocean) -
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Continents and islands of the Southern Ocean (from Southern Ocean) -
Iceberg A22A in the South Atlantic Ocean (from Atlantic Ocean) -
Cod fishery in Norway (from Atlantic Ocean) -
Malé's population has increased from 20,000 people in 1987 to more than 220,000 people in 2020. (from Indian Ocean) -
The 1564 Typus Orbis Terrarum, a map by Abraham Ortelius, showed the imagined link between the proposed continent of Antarctica and South America. (from Southern Ocean) -
![Image 30An exclusive economic zone (EEZ) map of the Pacific which excludes non-tropical islands.[why?] (from Pacific Ocean)](https://upload.wikimedia.org/wikipedia/commons/thumb/b/bc/Map_of_the_Exclusive_Economic_Zones_of_the_Pacific_Ocean.png/120px-Map_of_the_Exclusive_Economic_Zones_of_the_Pacific_Ocean.png)
An exclusive economic zone (EEZ) map of the Pacific which excludes non-tropical islands.[why?] (from Pacific Ocean) -
According to the Coastal hypothesis, modern humans spread from Africa along the northern rim of the Indian Ocean. (from Indian Ocean) -
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Major ocean trade routes in the world include the northern Indian Ocean. (from Indian Ocean) -
A general delineation of the Antarctic Convergence, sometimes used by scientists as the demarcation of the Southern Ocean (from Southern Ocean) -
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Maris Pacifici by Ortelius (1589). One of the first printed maps to show the Pacific Ocean (from Pacific Ocean) -
MS Explorer in Antarctica in January 1999. She sank on 23 November 2007 after hitting an iceberg. (from Southern Ocean) -
1911 South Polar Regions exploration map (from Southern Ocean) -
![Image 39"Terres Australes" [sic] label without any charted landmass (from Southern Ocean)](https://upload.wikimedia.org/wikipedia/commons/thumb/8/8e/Geography_world_map.jpeg/120px-Geography_world_map.jpeg)
"Terres Australes" [sic] label without any charted landmass (from Southern Ocean) -
The Arctic region; of note, the region's southerly border on this map is depicted by a red isotherm, with all territory to the north having an average temperature of less than 10 °C (50 °F) in July. (from Arctic Ocean) -
Famous official portrait of Captain James Cook who proved that waters encompassed the southern latitudes of the globe. "He holds his own chart of the Southern Ocean on the table and his right hand points to the east coast of Australia on it." (from Southern Ocean) -
Greco-Roman trade with ancient India according to the Periplus of the Erythraean Sea 1st century CE (from Indian Ocean) -
False color map of ocean depth in the Atlantic basin (from Atlantic Ocean) -
Minke whale (from Arctic Ocean) -
Waves in the trade winds in the Atlantic Ocean – areas of converging winds that move along the same track as the prevailing wind – create instabilities in the atmosphere that may lead to the formation of hurricanes. -
Banks of the northeast Atlantic (from Atlantic Ocean) -
Bahama Banks (from Atlantic Ocean) -
For most of the 16th century, the Portuguese dominated the Indian Ocean trade. (from Indian Ocean) -
Frank Hurley: As time wore on it became more and more evident that the ship was doomed (Endurance trapped in pack ice), National Library of Australia. (from Southern Ocean) -
As the Gulf Stream meanders across the North Atlantic from the North American east coast to Western Europe its temperature drops by 20 °C (36 °F). -
On the sea ice of the Arctic Ocean temporary logistic stations may be installed, Here, a Twin Otter is refueled on the pack ice at 86°N, 76°43‘W. (from Arctic Ocean) -
Agulhas Bank (from Atlantic Ocean) -
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Emanuel Bowen's 1780s map of the Arctic features a "Northern Ocean". (from Arctic Ocean) -
A Ring of Fire; the Pacific is ringed by many volcanoes and oceanic trenches. This map does not show the Cascadia Subduction Zone along part of the west coast of North America, whose trench is completely buried in sediments. (from Pacific Ocean) -
The Kennedy Channel. (from Arctic Ocean) -
A map of Australia's official interpretation of the names and limits of oceans and seas around Australia (from Southern Ocean) -
Mombasa Port on Kenya's Indian Ocean coast (from Indian Ocean) -
"Southern Ocean" as alternative to the Aethiopian Ocean, 18th century (from Southern Ocean) -
USS Vincennes at Disappointment Bay, Antarctica in early 1840 (from Southern Ocean) -
Coral reefs of the Maldives (from Indian Ocean) -
Embarked and disembarked slaves in the Atlantic slave trade 1525–1863 (first and last slave voyages) (from Atlantic Ocean) -
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The Andaman Negritos are thought to be the first inhabitants of the Andaman Islands, having emigrated from the mainland tens of thousands of years ago. (from Indian Ocean) -
Sea cover in the Arctic Ocean, showing the median, 2005 and 2007 coverage (from Arctic Ocean) -
The bathyscaphe Trieste before her record dive to the bottom of the Mariana Trench, 23 January 1960 (from Pacific Ocean) -
Distribution of the major water mass in the Arctic Ocean. The section sketches the different water masses along a vertical section from Bering Strait over the geographic North Pole to Fram Strait. As the stratification is stable, deeper water masses are denser than the layers above. (from Arctic Ocean) -
Area inside the black line indicates the area constituting the Pacific Ocean prior to 2002; darker blue areas are its informal current borders following the recreation of the Southern Ocean and the reinclusion of marginal seas. (from Southern Ocean) -
Sunset in Monterey County, California, U.S. (from Pacific Ocean) -
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The Pacific Ocean, photograph taken from space by the GOES-18 spacecraft in September 2023 (from Pacific Ocean) -
During summer, warm continental masses draw moist air from the Indian Ocean hence producing heavy rainfall. The process is reversed during winter, resulting in dry conditions. (from Indian Ocean) -
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Map showing the proposal presented by the thesis entitled "Natural delimitation between the Pacific and South Atlantic oceans by the Shackleton Fracture Zone". (from Pacific Ocean) -
The International Hydrographic Organization's delineation of the "Southern Ocean" has moved steadily southwards since the original 1928 edition of its Limits of Oceans and Seas. (from Southern Ocean) -
The Arctic region showing the Northeast Passage, the Northern Sea Route within it, and the Northwest Passage. (from Arctic Ocean) -
Air pollution in South Asia spread over the Bay of Bengal and beyond. (from Indian Ocean) -
1928 delineation (from Southern Ocean) -
Regional Working Group zones for SOOS (from Southern Ocean) -
The Arctic Ocean, with borders as delineated by the International Hydrographic Organization (IHO), including Hudson Bay (some of which is south of 57°N latitude, off the map) and all other marginal seas. (from Arctic Ocean) -
Fish of the Notothenioidei suborder, such as this young icefish, are mostly restricted to the Antarctic and Subantarctic. (from Southern Ocean) -
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Decrease of old Arctic Sea ice 1982–2007 (from Arctic Ocean) -
Map of the Pacific Ocean during European Exploration, circa 1702–1707 (from Pacific Ocean) -
An iceberg being pushed out of a shipping lane by (L to R) USS Burton Island, USS Atka, and USS Glacier near McMurdo Station, Antarctica, 1965 (from Southern Ocean) -
An adult and sub-adult Minke whale are dragged aboard the Japanese whaling vessel Nisshin Maru. (from Southern Ocean) -
In 2020, Japanese Prime Minister Suga declined to drink the bottle of Fukushima's treated radioactive water that he was holding, which would otherwise be discharged to the Pacific. (from Pacific Ocean) -
The economically important Silk Road was blocked from Europe by the Ottoman Empire in c. 1453 with the fall of the Byzantine Empire. This spurred exploration, and a new sea route around Africa was found, triggering the Age of Discovery. (from Indian Ocean) -
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Made in 1529, the Diogo Ribeiro map was the first to show the Pacific at about its proper size (from Pacific Ocean) -
Pacific Ocean currents have created three islands of debris. (from Pacific Ocean) -
Excavation of the Ertebølle middens in 1880 (from Atlantic Ocean) -
Map showing the proposal presented by the thesis entitled "Natural delimitation between the Pacific and South Atlantic oceans by the Shackleton Fracture Zone". (from Atlantic Ocean)
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The island geography of the Pacific Ocean Basin (from Pacific Ocean) -
The Atlantic Gyres influenced the Portuguese discoveries and trading port routes, here shown in the India Run ("Carreira da Índia"), which would be developed in subsequent years. (from Atlantic Ocean) -
Universalis Cosmographia, also known as the Waldseemüller map, dated 1507, was the first map to show the Americas separating two distinct oceans. South America was generally considered the New World and shows the name "America" for the first time, after Amerigo Vespucci (from Pacific Ocean) -
Sunset over the Pacific Ocean as seen from the International Space Station. Tops of thunderclouds are also visible. (from Pacific Ocean) -
A copepod (from Arctic Ocean) -
A Chagossian on Diego Garcia in 1971, before the British expelled the islanders. He spoke a French-based creole language and his ancestors were likely brought as slaves in the 19th century. (from Indian Ocean) -
Thule archaeological site (from Arctic Ocean) -
The Austronesian maritime trade network was the first trade routes in the Indian Ocean. (from Indian Ocean) -
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Typhoon Tip at global peak intensity on 12 October 1979 (from Pacific Ocean) -
Map showing the migration of the Austronesian peoples (from Pacific Ocean) -
Admiral von Bellingshausen (from Southern Ocean) -
Path of the thermohaline circulation. Purple paths represent deep-water currents, while blue paths represent surface currents. -
Location of the Southern Ocean gyres (from Southern Ocean) -
Density structure of the upper 1,200 m (3,900 ft) in the Arctic Ocean. Profiles of temperature and salinity for the Amundsen Basin, the Canadian Basin and the Greenland Sea are sketched. (from Arctic Ocean) -
Based on the medieval Íslendingasögur sagas, including the Grœnlendinga saga, this interpretative map of the "Norse World" shows that Norse knowledge of the Americas and the Atlantic remained limited. (from Atlantic Ocean)
![Image 30An exclusive economic zone (EEZ) map of the Pacific which excludes non-tropical islands.[why?] (from Pacific Ocean)](https://naturehabitats.org/knowledge-base/rose/?rdp_we_resource=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FFile%3AMap_of_the_Exclusive_Economic_Zones_of_the_Pacific_Ocean.png)
![Image 39"Terres Australes" [sic] label without any charted landmass (from Southern Ocean)](https://naturehabitats.org/knowledge-base/rose/?rdp_we_resource=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FFile%3AGeography_world_map.jpeg)
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- The United States military launches attacks on and destroys 7 Houthi radar stations in Yemen in retaliation after a merchant sailor went missing following Houthi strikes on ships in the Red Sea. (The Seattle Times)
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WikiProjects
Topics
Ocean currents and gyres | |||||||||||
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Oceans
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Admiralty law
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External media
- World Ocean Database and World Ocean Atlas Series – from the U.S. National Centers for Environmental Information, National Oceanic and Atmospheric Administration. Includes the World Ocean Atlas.
- European Atlas of the Seas – the European Atlas of the Seas, from the European Commission
- NOAA Research – NOAA research news, Oceanic and Atmospheric Research (OAR)
- Ocean Research – from The World Ocean Observatory
- Ocean Biodiversity Information System – "a global open-access data and information clearing-house on marine biodiversity for science, conservation and sustainable development"
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