All articles starting with O
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Oceane Michelon
Oceane Michelon, French biathlete (born 2002, Chambéry), double Olympic champion at Milan-Cortina 2026 in mass start and women's relay plus sprint silver, 2025 world relay champion, IBU Cup overall winner 2023-24.
Oceane Sercien Ugolin
Océane Sercien-Ugolin, born 1997 in Cherbourg, is a French right back who won handball gold at Tokyo 2020, silver at Euro 2020, and the 2022-23 Champions League with Vipers Kristiansand; now at DVSC Schaeffler.
Océane Toussaint
Océane Toussaint (Océane Nathalie Toussaint Dit Marseille), born 2004 in Bagnolet, is a goalkeeper for Paris Saint-Germain who switched from France youth teams to the Haiti national team in April 2026.
Oceaneering Magnum
The Oceaneering Magnum is a family of heavy work class remotely operated vehicles built by Oceaneering International in 1993 for deepwater oil and gas drilling, construction, and intervention.
OceanGate
OceanGate was an American company founded in 2009 by Stockton Rush and Guillermo Söhnlein that operated submersibles for tourism and exploration, including dives to the Titanic wreck.
Oceania
Oceania (French Océanie) is the Pacific-centered region comprising Australia, New Zealand, Melanesia, Micronesia, and Polynesia; about 46.6 million people (2025 UN projection) across 8,486,460 km², treated as a continent in some classifications but a region by National Geographic.
Oceania Football Confederation
Oceania Football Confederation (OFC), one of six FIFA confederations, founded 1966, Auckland headquarters, 11 members plus Kiribati and Tuvalu; runs OFC Nations Cup and, from 2026, a direct World Cup slot and the OFC Pro League.
Oceania National Olympic Committees
Oceania National Olympic Committees (ONOC), founded 1981, Fiji-based Continental Association of the IOC representing 17 Pacific NOCs including Australia and New Zealand; led since 2025 by president Baklai Temengil.
Oceanic Anoxic Event 2
Oceanic Anoxic Event 2 (OAE 2) was an interval of widespread ocean deoxygenation at the Cenomanian–Turonian boundary, about 94 million years ago, during extreme global warmth.
Oceanic basin
Oceanic basin: the large crustal depressions holding the Pacific, Atlantic, Indian, Southern, and Arctic oceans; defined by ridges, trenches, abyssal plains, and only about 27-29% mapped.
Oceanic carbon cycle
The oceanic carbon cycle is the movement of carbon through the ocean, which holds about 40 times more carbon than the atmosphere and absorbs about a quarter of annual human CO2 emissions.
Oceanic climate
The oceanic climate, also called a marine or maritime climate, is a temperate climate type with cool summers, mild winters, and precipitation year-round, typical of western Europe and the Pacific Northwest.
Oceanic control area
An oceanic control area (OCA) is controlled airspace over the open ocean where controllers separate aircraft by managing planned flight trajectories, since radar coverage is unreliable.
Oceanic crust
Oceanic crust is the thin, dense basaltic layer beneath the oceans, formed at mid-ocean ridges and recycled at subduction zones, covering about 60% of Earth's surface.
Oceanic languages
The Oceanic languages are a large subgroup of the Malayo-Polynesian branch of Austronesian, spoken across the Pacific from Hawaii to New Zealand and Easter Island.
Oceanic Niño Index
The Oceanic Niño Index (ONI) is a NOAA index identifying El Niño and La Niña episodes from sea surface temperature anomalies in the central equatorial Pacific.
Oceanic plateau
An oceanic plateau is a vast region of anomalously thick oceanic crust, typically over 200,000 km² in area, formed by mantle plumes; the largest is the Ontong Java Plateau.
Oceanic trench
Oceanic trench: long, narrow seafloor depressions at subduction zones, the deepest parts of the ocean. 38 known, 28 in the Pacific; deepest is Challenger Deep, Mariana Trench, about 10,924 m.
Oceanic whitetip shark
Oceanic whitetip shark (Carcharhinus longimanus), large pelagic tropical shark with white-tipped fins. Once abundant, now Critically Endangered; ESA threatened since 2018 and first shark on CITES Appendix I (2025).
Oceanidum Fossa
Oceanidum Fossa is an IAU-named fossa (long narrow depression, a single graben) on Mars at about 61.7S, 330.6E in Terra Sirenum, diameter about 153-167 km, named in 1976 from a classical albedo feature.
Oceaniopteris
Oceaniopteris is a genus of ferns in the family Blechnaceae, erected in 2016 to hold species formerly placed in Blechnum; its species are found mainly in Oceania.
Oceanites
Oceanites is a genus of austral storm-petrels (Oceanitidae) erected by Keyserling & Blasius, 1840, type species Wilson's storm-petrel O. oceanicus; also the name of a DC-based Antarctic penguin research nonprofit founded 1987.
OceanLab
OceanLab, also known as Above & Beyond with Justine Suissa, is a British vocal trance project formed in London in 2000 by vocalist Justine Suissa with Above & Beyond.
OceanofPDF
OceanofPDF is an ebook piracy website offering thousands of copyrighted books as free downloads; shut down in August 2018 after an author campaign, it keeps resurfacing.
Oceanographer
An oceanographer is a scientist who studies the ocean, including its processes, seawater, seafloor, and marine life. The field divides into biological, chemical, geological, and physical branches.
Oceanographic time-series cruise programs
Oceanographic time-series cruise programs are recurring shipboard expeditions that occupy the same deep-ocean station on a monthly schedule to measure water-column physics, chemistry, and biology over decades.
Oceanography
Oceanography, also called ocean science or marine science, is the study of the ocean, drawing on physics, chemistry, geology, and biology to cover seawater, marine life, currents, and the seafloor.
Océanopolis
Océanopolis, Brest's national ocean science center and Brittany's largest aquarium, opened 21 June 1990; 77 aquariums, 1,000 species, pressurized deep-sea tanks, Métamorphose renovation through 2027.
Oceanos Prize
The Portugal Telecom Prize (Prêmio Portugal Telecom de Literatura) was a Brazilian literary award founded in 2003, which opened to the whole Portuguese-speaking world in 2007.
Oceansat
Oceansat is a series of Indian Earth-observation satellites dedicated to ocean applications, developed and operated by ISRO, comprising Oceansat-1, launched in 1999, Oceansat-2, and Oceansat-3, also known as EOS-06.