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Portal:Oceans

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Wikipedia portal for content related to Oceans

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

Selected panorama

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Introduction

Earth's ocean, showing common divisions
Map with five-oceans (approx. boundaries)
Earth's ocean

Main five oceans division:

Further subdivision:

Marginal seas
Surface view of theAtlantic Ocean

Theocean is the body ofsalt water that covers approximately 70.8% ofEarth. The ocean is conventionally divided into large bodies of water, which are also referred to asoceans (in descending order by area: thePacific Ocean, theAtlantic Ocean, theIndian Ocean, theAntarctic/Southern Ocean, and theArctic Ocean), and are themselves mostly divided intoseas,gulfs andsubsequent bodies of water. The ocean contains 97% ofEarth's water and is the primary component of Earth'shydrosphere, acting as a hugereservoir of heat forEarth's energy budget, as well as for itscarbon cycle andwater cycle, forming the basis forclimate andweather patterns worldwide. The ocean is essential tolife on Earth, harbouring most of Earth's animals andprotist life, originatingphotosynthesis andtherefore Earth's atmospheric oxygen, still supplying half of it. (Full article...)

Waves in Pacifica, California

Asea is a largebody ofsalt water. There areparticular seas andthe sea.The sea commonly refers to theocean, the interconnected body ofseawaters that spans most of Earth. Particular seas are eithermarginal seas, second-order sections of the oceanic sea (e.g. theMediterranean Sea), or certain large, nearly landlocked bodies of water. (Full article...)

Oceanography (from Ancient Greek ὠκεανός (ōkeanós) 'ocean' and γραφή (graphḗ) 'writing'), also known asoceanology,sea science,ocean science, andmarine science, is the scientific study of theocean, including itsphysics,chemistry,biology, andgeology. (Full article...)

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Map of the Baltic Sea region

TheBaltic Sea is an arm of theAtlantic Ocean that is enclosed by the countries ofDenmark,Estonia,Finland,Germany,Latvia,Lithuania,Poland,Russia,Sweden, and theNorth and CentralEuropean Plain regions. It is the world's largestbrackish water basin.

The sea stretches from 53°N to 66°N latitude and from 10°E to 30°E longitude. It is ashelf sea andmarginal sea of the Atlantic with limited water exchange between the two, making it aninland sea. The Baltic Sea drains through theDanish straits into theKattegat by way of theØresund,Great Belt andLittle Belt. It includes theGulf of Bothnia (divided into theBothnian Bay and theBothnian Sea), theGulf of Finland, theGulf of Riga and theBay of Gdańsk. (Full article...)

List of selected articles

Interesting facts -show different entries

An empty shell of Halystina umberlee

Selected list articles and Marine habitat topics

Tasks


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

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In the news

12 February 2026 –2025–26 South-West Indian Ocean cyclone season
At least 31 people are killed, 36 others are injured, and several are missing asCyclone Gezani makes landfall inMadagascar.(DW)
6 February 2026 –
Three men, including the pilot, are killed when alight aircraft crashes into the ocean offGoolwa South,South Australia.(Reuters)
5 February 2026 –United States strikes on alleged drug traffickers during Operation Southern Spear
TheUnited States Navy strikes a boat suspected of transportingillegal narcotics in theEastern Pacific, killing two people.(Reuters)
5 February 2026 –
TheMoldovanparliament ratifies theUnited NationsLaw of the Sea Treaty.(Parliament of Moldova)
4 February 2026 –2025 North Sea ship collision
A cargo ship captain is sentenced to six years inprison forgross negligence after his ship collided with anoil tanker in theNorth Sea off the coast ofEast Riding of Yorkshire,England, UK, in 2025, killing one person.(BBC News)

WikiProjects

Topics

Antarctic/Southern Ocean
Arctic Ocean
Atlantic Ocean
Indian Ocean
Pacific Ocean
Endorheic basins
Others
Waves
Upwelling





Antarctic bottom water
Circulation
Tides
Landforms
Plate
tectonics
Ocean zones
Sea level
Acoustics
Satellites
Related
Currents
Arctic Ocean
Atlantic Ocean
Indian Ocean
Pacific Ocean
Southern Ocean
Gyres
Major gyres
Other gyres
Related
Marine
Marine
life
Marine
habitats
Issues

More topics
More articles related to Oceans
African seas
Oceans
and seas
Gulfs
and bays
Straits
Historical
seas
Landforms
Coastal and oceanic landforms

Dois Irmãos - Fernando de Noronha
Beaches
River mouths
Processes
Management
Related
Sources of law
of the sea
Global
Specific
international straits
Maritime canals of
global significance
Other regional
and local
Main and related
concepts
International courts
History
Fish
Shellfish
Other seafood
Processed
seafood
Seafood dishes
Health hazards
Advisory services
Animal welfare
Related topics
  • Briefly held the title before the preceding ship reclaimed it†
  • Shared record‡

Categories

Category puzzle
Category puzzle
Select [►] to view subcategoriesOceans


Seas


Oceanography

Associated Wikimedia

The followingWikimedia Foundation sister projects provide more on this subject:

Admiralty law

Admiralty and maritime law
History
Features
Contract of carriage /charterparty
Parties
Judiciaries
International organizations
International conventions
International Codes

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