Portal:Oceans

The Oceans Portal
A portal dedicated to oceans, seas, oceanography and related topics

Selected panorama

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Icebergs broken off from glaciers in northern Baffin Bay, Cape York, Greenland
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
Orca (Orcinus orca) hunting a Weddell seal in the Southern Ocean
A view of the Southern Ocean from Great Ocean Road, Port Campbell, Princetown, Victoria, Australia
Clouds over the Southern Ocean, with continent labels
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 panorama of Zanzibar, Tanzania, particularly the Stone Town, taken from the Indian Ocean
A sea anemone in the Pacific Ocean, Baja California, Mexico
Caesio teres in the South Pacific Ocean in Fiji
Satellite view of the Pacific Ocean and the main windward Hawaiian Islands
A view of Myrtos Beach and the Ionian Sea, Cephalonia, Ionian Islands, Greece
A surfer in the Pacific Ocean at the 2010 Mavericks competition, village of Princeton-by-the-Sea, northern California

Introduction

The ocean is the body of salt water that covers approximately 70.8% of Earth. The ocean is conventionally divided into large bodies of water, which are also referred to as oceans (the Pacific, Atlantic, Indian, Antarctic/Southern, and Arctic Ocean), and are themselves mostly divided into seas, gulfs and subsequent bodies of water. The ocean contains 97% of Earth's water and is the primary component of Earth's hydrosphere, acting as a huge reservoir of heat for Earth's energy budget, as well as for its carbon cycle and water cycle, forming the basis for climate and weather patterns worldwide. The ocean is essential to life on Earth, harbouring most of Earth's animals and protist life, originating photosynthesis and therefore Earth's atmospheric oxygen, still supplying half of it. (Full article...)

A sea is a large body of salt water. There are particular seas and the sea. The sea commonly refers to the ocean, the interconnected body of seawaters that spans most of Earth. 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 ocean, including its physics, chemistry, biology, and geology. (Full article...)

Read more about oceans...
Read more about the sea...
Read more about oceanography...

Selected article -

The Panthalassa superocean 250 million years ago

Panthalassa, also known as the Panthalassic Ocean or Panthalassan Ocean (from Greek πᾶν "all" and θάλασσα "sea"), was the vast superocean that encompassed planet Earth and surrounded the supercontinent Pangaea, the latest in a series of supercontinents in the history of Earth. During the Paleozoic–Mesozoic transition (c. 250 Ma), the ocean occupied almost 70% of Earth's surface, with the supercontinent Pangaea taking up the remaining one third. The original, ancient ocean floor has now completely disappeared because of the continuous subduction along the continental margins on its circumference. Panthalassa is also referred to as the Paleo-Pacific ("old Pacific") or Proto-Pacific because the Pacific Ocean is a direct continuation of Panthalassa. (Full article...)

List of selected articles

Interesting facts -

Julie Packard

The deep-sea coral species Gersemia juliepackardae was named for Julie Packard (pictured), executive director of Monterey Bay Aquarium, for her work as an ocean conservationist.

Chinese politician Liu Cigui worked as a rusticated youth and studied oceanography.

Female seaweed blennies deposit their eggs in a shared nest where the male fish guards them until they hatch.

Selected list articles and Marine habitat topics

Tasks

edit tasks

Here are some tasks awaiting attention:

Article requests : List of oceanographers, create a comprehensive article on Concentrations of marine debris out of all the gyre and "garbage patch" articles
Copyedit : Draft:Terrance (octopus)
Expand : Coral Sea, Endeavour Strait, Greenland Sea, Solomon Sea
Photo : find images for Category:Wikipedia requested photographs in the oceans
Stubs : Oceanography stub articles, Marine geography stub articles, Aleutian Trench, Bellingshausen Sea, Caernarfon Bay, Gerlache Strait, Gulf of Oman, Iceland Sea, Draft:Terrance (octopus)
Update : Botany Bay, Wilkins Sound, Mariana Trench, Challenger Deep
Verify : Antarctic Circumpolar Current, Bering Sea, Gulf of Aden, Iceberg B-15, Ionian Sea, Japan Trench, Moreton Bay, Sound (geography), Timor Sea
Other : add ISBNs and remove excessive or inappropriate external links from Aral Sea; check La Belle (ship) for GA status; improve citations or footnotes and remove excessive or inappropriate external links from MS Estonia

General images -

The following are images from various ocean-related articles on Wikipedia.

Image 1A stratovolcano in Ulawun on the island of New Britain in Papua New Guinea (from Pacific Ocean)
Image 2Path of the thermohaline circulation. Purple paths represent deep-water currents, while blue paths represent surface currents.
Image 3Location of the Southern Ocean gyres (from Southern Ocean)
Image 4Embarked and disembarked slaves in the Atlantic slave trade 1525–1863 (first and last slave voyages) (from Atlantic Ocean)
Image 5MS Explorer in Antarctica in January 1999. She sank on 23 November 2007 after hitting an iceberg. (from Southern Ocean)
Image 6Map of the Pacific Ocean during European Exploration, circa 1754. (from Pacific Ocean)
Image 7Major ocean trade routes in the world include the northern Indian Ocean. (from Indian Ocean)
Image 8USS Vincennes at Disappointment Bay, Antarctica in early 1840 (from Southern Ocean)
Image 9The Aethiopian Ocean depicted in a 1710 French map of Africa (from Atlantic Ocean)
Image 10Density 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)
Image 11Regional Working Group zones for SOOS (from Southern Ocean)
Image 12A female warty squid (Moroteuthis ingens) (from Southern Ocean)
Image 13Manganese nodule (from Southern Ocean)
Image 14The British invasion of Isle de France on 29 November 1810 during the Napoleonic Wars (from Indian Ocean)
Image 15Marine debris on a Hawaiian coast in 2008 (from Pacific Ocean)
Image 16An exclusive economic zone (EEZ) map of the Pacific (from Pacific Ocean)
Image 17Weddell seals (Leptonychotes weddellii) are the most southerly of Antarctic mammals. (from Southern Ocean)
Image 18Agulhas Bank (from Atlantic Ocean)
Image 19Distribution 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)
Image 20On 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)
Image 21Marine debris strewn over the beaches of the South Atlantic Inaccessible Island (from Atlantic Ocean)
Image 221937 delineation (from Southern Ocean)
Image 23False color map of ocean depth in the Atlantic basin (from Atlantic Ocean)
Image 24Antarctic krill (Euphausia superba) are a keystone species of the food web. (from Southern Ocean)
Image 25A general delineation of the Antarctic Convergence, sometimes used by scientists as the demarcation of the Southern Ocean (from Southern Ocean)
Image 26Fish of the Notothenioidei suborder, such as this young icefish, are mostly restricted to the Antarctic and Subantarctic. (from Southern Ocean)
Image 27Maris Pacifici by Ortelius (1589). One of the first printed maps to show the Pacific Ocean (from Pacific Ocean)
Image 28Continents and islands of the Southern Ocean (from Southern Ocean)
Image 29Mombasa Port on Kenya's Indian Ocean coast (from Indian Ocean)
Image 30As 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).
Image 31For most of the 16th century, the Portuguese dominated the Indian Ocean trade. (from Indian Ocean)
Image 32Frank 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)
Image 33Mount St. Helens in Skamania County, Washington, U.S. in 2020 (from Pacific Ocean)
Image 34Madagascar's elephant bird, Mauritius's dodo bird and ostrich (from left to right) (from Indian Ocean)
Image 35Portrait of Edmund Halley by Godfrey Kneller (before 1721) (from Southern Ocean)
Image 36The Antarctic Circumpolar Current (ACC) is the strongest current system in the world oceans, linking the Atlantic, Indian and Pacific basins. (from Southern Ocean)
Image 37The Arctic region showing the Northeast Passage, the Northern Sea Route within it, and the Northwest Passage via Canadian Inland Waters. (from Arctic Ocean)
Image 38Air pollution in South Asia spread over the Bay of Bengal and beyond. (from Indian Ocean)
Image 39Banks of the northwest Atlantic (from Atlantic Ocean)
Image 40The Antarctic Ocean, as delineated by the draft 4th edition of the International Hydrographic Organization's Limits of Oceans and Seas (2002) (from Southern Ocean)
Image 41An adult and sub-adult Minke whale are dragged aboard the Japanese whaling vessel Nisshin Maru. (from Southern Ocean)
Image 42Coral reefs of the Maldives (from Indian Ocean)
Image 43Banks of the northeast Atlantic (from Atlantic Ocean)
Image 44Pacific Ocean currents have created three islands of debris. (from Pacific Ocean)
Image 45Three polar bears approach USS Honolulu near the North Pole. (from Arctic Ocean)
Image 46A bathymetric/topographic map of the Arctic Ocean and the surrounding lands. (from Arctic Ocean)
Image 47Admiral von Bellingshausen (from Southern Ocean)
Image 481928 delineation (from Southern Ocean)
Image 49James Weddell's second expedition in 1823, depicting the brig Jane and the cutter Beaufroy (from Southern Ocean)
Image 50Tarawa Atoll in Kiribati (from Pacific Ocean)
Image 51The Austronesian maritime trade network was the first trade routes in the Indian Ocean. (from Indian Ocean)
Image 52Emanuel Bowen's 1780s map of the Arctic features a "Northern Ocean". (from Arctic Ocean)
Image 53Area 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)
Image 54During 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)
Image 55An 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)
Image 56Model of a Fijian drua, an example of an Austronesian vessel with a double-canoe (catamaran) hull and a crab claw sail (from Pacific Ocean)
Image 57Excavation of the Ertebølle middens in 1880 (from Atlantic Ocean)
Image 58Walruses on Arctic ice floe (from Arctic Ocean)
Image 59Impact of El Niño and La Niña on North America (from Pacific Ocean)
Image 60"Southern Ocean" as alternative to the Aethiopian Ocean, 18th century (from Southern Ocean)
Image 61Minke whale (from Arctic Ocean)
Image 62Malé's population has increased from 20,000 people in 1987 to more than 220,000 people in 2020. (from Indian Ocean)
Image 63A map of Australia's official interpretation of the names and limits of oceans and seas around Australia (from Southern Ocean)
Image 64Map showing the migration of the Austronesian peoples (from Pacific Ocean)
Image 65Based 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 66Orca (Orcinus orca) hunting a Weddell seal in the Southern Ocean (from Southern Ocean)
Image 67"Terres Australes" [sic] label without any charted landmass (from Southern Ocean)
Image 68Iceberg A22A in the South Atlantic Ocean (from Atlantic Ocean)
Image 69In 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)
Image 70The Kennedy Channel. (from Arctic Ocean)
Image 71The 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)
Image 72Sunset over the Pacific Ocean as seen from the International Space Station. Tops of thunderclouds are also visible. (from Pacific Ocean)
Image 73Abel Aubert du Petit-Thouars taking over Tahiti on 9 September 1842 (from Pacific Ocean)
Image 74The 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 75Made in 1529, the Diogo Ribeiro map was the first to show the Pacific at about its proper size (from Pacific Ocean)
Image 76Thule archaeological site (from Arctic Ocean)
Image 77The island geography of the Pacific Ocean Basin (from Pacific Ocean)
Image 78The 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)
Image 79The three major cultural areas of the Pacific Ocean islands: Micronesia, Melanesia and Polynesia (from Pacific Ocean)
Image 801911 South Polar Regions exploration map (from Southern Ocean)
Image 81The 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)
Image 82A wandering albatross (Diomedea exulans) on South Georgia (from Southern Ocean)
Image 83A 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)
Image 84Seas that are parts of the Southern Ocean (from Southern Ocean)
Image 85Universalis 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)
Image 86The 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)
Image 87Aldabra giant tortoise from the islands of the Aldabra Atoll in the Seychelles (from Indian Ocean)
Image 88Waves 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.
Image 89Greco-Roman trade with ancient India according to the Periplus of the Erythraean Sea 1st century CE (from Indian Ocean)
Image 90Sunset in Monterey County, California, U.S. (from Pacific Ocean)
Image 91Severe 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)
Image 92In 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)
Image 93
Upwelling in the Southern Ocean
(from Southern Ocean)
Image 94The International Hydrographic Organization's delineation of the "Southern Ocean" has moved steadily southward since the original 1928 edition of its Limits of Oceans and Seas. (from Southern Ocean)
Image 95Cod fishery in Norway (from Atlantic Ocean)
Image 96Map of the Pacific Ocean during European Exploration, circa 1702–1707 (from Pacific Ocean)
Image 97A copepod (from Arctic Ocean)
Image 98The bathyscaphe Trieste before her record dive to the bottom of the Mariana Trench, 23 January 1960 (from Pacific Ocean)
Image 99Famous 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)
Image 100Typhoon Tip at global peak intensity on 12 October 1979 (from Pacific Ocean)
Image 101A 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)
Image 102Capture of Atlantic northwest cod in million tons (from Atlantic Ocean)
Image 103According to the Coastal hypothesis, modern humans spread from Africa along the northern rim of the Indian Ocean. (from Indian Ocean)
Image 104The 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)
Image 105Sea cover in the Arctic Ocean, showing the median, 2005 and 2007 coverage (from Arctic Ocean)
Image 106Bahama Banks (from Atlantic Ocean)

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4 August 2025 – India–Philippines relations, Territorial disputes in the South China Sea: The Indian and Philippine navies conduct their first joint exercise in the Philippine-designated exclusive economic zone in the South China Sea. The Indian Navy deployed guided missile destroyers, tankers, and corvettes, while the Philippines sent two frigates. (AP) (Reuters)
29 July 2025 – Red Sea crisis: The Houthis launch a ballistic missile targeting Ben Gurion International Airport in Israel, which was intercepted by Israeli forces. (The Times of Israel)
28 July 2025 – Red Sea crisis: Houthi attacks on commercial vessels; The Houthis release a video showing ten crewmembers of the Greek-operated cargo ship Eternity C, which the group attacked and sunk earlier this month, in captivity. (Reuters)
25 July 2025 – Mediterranean Sea migrant smuggling: A boat carrying Egyptian migrants and Sudanese crewmen en route to Europe capsizes off the coast of Tobruk, Cyrenaica, Libya, killing at least 15 people, injuring 10 others and leaving some missing. (AP)

WikiProjects

WikiProject Oceans
WikiProject Limnology and Oceanography
WikiProject Marine life
WikiProject Cetaceans
WikiProject Fishes
WikiProject Sharks

Related WikiProjects

WikiProject Arthropods
WikiProject Fisheries and Fishing
WikiProject Lakes
WikiProject Rivers

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Commons
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Admiralty law

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Do you have a question about oceans, seas or oceanography that you can't find the answer to? Consider asking it at the Wikipedia reference desk.

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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Earth's oceans and seas
Antarctic/Southern Ocean	Amundsen Sea Bellingshausen Sea Cooperation Sea Cosmonauts Sea Davis Sea D'Urville Sea King Haakon VII Sea Lazarev Sea Mawson Sea Riiser-Larsen Sea Ross Sea Scotia Sea Somov Sea Weddell Sea
Arctic Ocean	Amundsen Gulf Barents Sea Beaufort Sea Chukchi Sea East Siberian Sea Greenland Sea Gulf of Boothia Kara Sea Laptev Sea Lincoln Sea Pechora Sea Prince Gustaf Adolf Sea Queen Victoria Sea Wandel Sea White Sea
Atlantic Ocean	Adriatic Sea Aegean Sea Alboran Sea American Mediterranean Sea Archipelago Sea Argentine Sea Baffin Bay Balearic Sea Baltic Sea Bay of Biscay Bay of Bothnia Bay of Campeche Bay of Fundy Black Sea Bothnian Sea Caribbean Sea Celtic Sea English Channel Foxe Basin Greenland Sea Gulf of Bothnia Gulf of Finland Gulf of Guinea Gulf of Lion Gulf of Maine Gulf of Mexico Gulf of Sidra Gulf of St. Lawrence Gulf of Venezuela Hudson Bay Ionian Sea Irish Sea Irminger Sea James Bay Labrador Sea Levantine Sea Libyan Sea Ligurian Sea Mediterranean Sea Myrtoan Sea North Sea Norwegian Sea Sargasso Sea Sea of Åland Sea of Azov Sea of Crete Sea of the Hebrides Sea of Marmara Thracian Sea Tyrrhenian Sea Wadden Sea
Indian Ocean	Andaman Sea Arabian Sea Bay of Bengal Flores Sea Great Australian Bight Gulf of Aden Gulf of Aqaba Gulf of Khambhat Gulf of Kutch Gulf of Oman Gulf of Suez Laccadive Sea Mozambique Channel Persian Gulf Red Sea Timor Sea
Pacific Ocean	Arafura Sea Bali Sea Banda Sea Bering Sea Bismarck Sea Bohai Sea Bohol Sea Camotes Sea Celebes Sea Chilean Sea Coral Sea East China Sea Gulf of Alaska Gulf of Anadyr Gulf of California Gulf of Carpentaria Gulf of Fonseca Gulf of Panama Gulf of Thailand Gulf of Tonkin Halmahera Sea Java Sea Koro Sea Mar de Grau Molucca Sea Moro Gulf Philippine Sea Salish Sea Savu Sea Sea of Japan Sea of Okhotsk Seram Sea Seto Inland Sea Shantar Sea Sibuyan Sea Solomon Sea South China Sea Sulu Sea Tasman Sea Visayan Sea West Philippine Sea Yellow Sea
Endorheic basins	Aral Sea Caspian Sea Dead Sea Salton Sea
Others	Ancient oceans Ocean Sea Superocean
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Physical oceanography
Waves	Airy wave theory Ballantine scale Benjamin–Feir instability Boussinesq approximation Breaking wave Clapotis Cnoidal wave Cross sea Dispersion Edge wave Equatorial waves Gravity wave Green's law Infragravity wave Internal wave Iribarren number Kelvin wave Kinematic wave Longshore drift Luke's variational principle Mild-slope equation Radiation stress Rogue wave Draupner wave Rossby wave Rossby-gravity waves Sea state Seiche Significant wave height Soliton Stokes drift Stokes problem Stokes wave Swell Trochoidal wave Tsunami megatsunami Undertow Ursell number Wave action Wave base Wave height Wave nonlinearity Wave power Wave radar Wave setup Wave shoaling Wave turbulence Wave–current interaction Waves and shallow water one-dimensional Saint-Venant equations shallow water equations Wind fetch Wind setup Wind wave model
Circulation	Atmospheric circulation Baroclinity Boundary current Coriolis force Coriolis–Stokes force Craik–Leibovich vortex force Downwelling Eddy Ekman layer Ekman spiral Ekman transport El Niño–Southern Oscillation General circulation model Geochemical Ocean Sections Study Geostrophic current Global Ocean Data Analysis Project Gulf Stream Humboldt Current Hydrothermal circulation Langmuir circulation Longshore drift Loop Current Modular Ocean Model Ocean current Ocean dynamical thermostat Ocean dynamics Ocean gyre Overflow Princeton Ocean Model Rip current Subsurface ocean current Sverdrup balance Thermohaline circulation shutdown Upwelling Whirlpool Wind generated current World Ocean Circulation Experiment
Tides	Amphidromic point Earth tide Head of tide Internal tide Lunitidal interval Perigean spring tide Rip tide Rule of twelfths Slack tide Theory of tides Tidal bore Tidal force Tidal power Tidal race Tidal range Tidal resonance Tide gauge Tideline
Landforms	Abyssal fan Abyssal plain Atoll Bathymetric chart Carbonate platform Coastal geography Cold seep Continental margin Continental rise Continental shelf Contourite Guyot Hydrography Knoll Ocean bank Oceanic basin Oceanic plateau Oceanic trench Passive margin Seabed Seamount Submarine canyon Submarine volcano
Plate tectonics	Convergent boundary Divergent boundary Fracture zone Hydrothermal vent Marine geology Mid-ocean ridge Mohorovičić discontinuity Oceanic crust Outer trench swell Ridge push Seafloor spreading Slab pull Slab suction Slab window Subduction Transform fault Vine–Matthews–Morley hypothesis Volcanic arc
Ocean zones	Benthic Deep ocean water Deep sea Littoral Mesopelagic Oceanic Pelagic Photic Surf Swash
Sea level	Deep-ocean Assessment and Reporting of Tsunamis Global Sea Level Observing System North West Shelf Operational Oceanographic System Sea-level curve Sea level drop Sea level rise World Geodetic System
Acoustics	Deep scattering layer Ocean acoustic tomography Sofar bomb SOFAR channel Underwater acoustics
Satellites	Jason-1 OSTM/Jason-2 Jason-3
Related	Acidification Argo Benthic lander Color of water DSV Alvin Marginal sea Marine energy Marine pollution Mooring National Oceanographic Data Center Ocean Explorations Observations Reanalysis Ocean surface topography Ocean temperature Ocean thermal energy conversion Oceanography Outline of oceanography Pelagic sediment Sea surface microlayer Sea surface temperature Seawater Science On a Sphere Stratification Thermocline Underwater glider Water column World Ocean Atlas
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Mid-ocean ridges
Present	Central Indian Chile East Pacific Explorer Gakkel Gorda Juan de Fuca Mid-Atlantic Pacific-Antarctic South American-Antarctic Southeast Indian Southwest Indian
Former	Aegir Alpha Antarctic-Phoenix Kula-Farallon Mid-Labrador Osbourn Trough Pacific-Farallon Pacific-Kula
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