Portal:Oceans

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Introduction

Surface view of the Atlantic Ocean

The ocean (also the sea or the world ocean) is the body of salt water that covers approximately 70.8% of the surface of Earth and contains 97% of Earth's water. An ocean can also refer to any of the large bodies of water into which the world ocean is conventionally divided. Separate names are used to identify five different areas of the ocean: Pacific (the largest), Atlantic, Indian, Antarctic/Southern, and Arctic (the smallest). Seawater covers approximately 361,000,000 km2 (139,000,000 sq mi) of the planet. The ocean is the principal component of Earth's hydrosphere, and therefore integral to life on Earth. Acting as a huge heat reservoir, the ocean influences climate and weather patterns, the carbon cycle, and the water cycle. (Full article...)

Waves in Pacifica, California

Sea refers to a large body of salty water, specifically of seawater. There are particular seas and the sea. The body of saline water that is generally referred to as the sea, is a body of salt water that extends as ocean water and ocean (or world ocean) over approximately 71% of the Earth's surface. The particular seas are either marginal seas, second-order sections of the oceanic sea (e.g. the Mediterranean Sea), or certain large, entirely landlocked, saltwater lakes (e.g. the Caspian Sea). (Full article...)

Oceanography (from Ancient Greek ὠκεανός (ōkeanós) 'ocean', and γραφή (graphḗ) 'writing'), also known as oceanology and ocean 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 the geology of the sea floor; 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, climatology, 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 -

The Great American Interchange, a faunal exchange that occurred after formation of the Isthmus of Panama bridged North and South America. Examples of migrant species in both Americas are shown.

The Central American Seaway (also known as the Panamanic Seaway, Inter-American Seaway and Proto-Caribbean Seaway) was a body of water that once separated North America from South America. It formed during the Jurassic (200–154 Ma) during the breakup of the supercontinent Pangaea, and closed when the Isthmus of Panama was formed by volcanic activity in the late Pliocene (2.76–2.54 Ma).

The closure of the Central American Seaway had tremendous effects on oceanic circulation and the biogeography of the adjacent seas, isolating many species and triggering speciation and diversification of tropical and sub-tropical marine fauna. The inflow of nutrient-rich water of deep Pacific origin into the Caribbean was blocked and so local species had to adapt to an environment of lower productivity. It had an even larger impact on terrestrial life. The seaway had isolated South America for much of the Cenozoic, which allowed the evolution of a wholly-unique diverse mammalian fauna there. When it closed, a faunal exchange with North America ensued and led to the extinction of many of the native South American forms. (Full article...)
List of selected articles

Interesting facts -

Selected list articles and Marine habitat topics

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General images -

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

In the news

7 February 2023 – Global spread of H5N1
Peru's Ministry of Environment reports that the H5N1 influenza A virus has killed 585 sea lions and more than 55,000 birds within its protected areas in recent weeks. (AFP via Hindustan Times)
4 February 2023 – High-altitude object events in 2023
The high-altitude balloon is shot down by a United States Air Force F-22 Raptor over the Atlantic Ocean at 2:39 PM EST. An operation to collect the remnants of the balloon in U.S. territorial waters is currently underway. It is the first time that an aircraft has been shot down in the United States since World War II. (AP) (CNN)
29 January 2023 – 2022–23 South-West Indian Ocean cyclone season
The death toll from Cyclone Cheneso's landfall in Madagascar has increased to 25, with 21 others still missing. (AFP via ABS-CBN News)
20 January 2023 –
A Dominican man who was lost in the Caribbean Sea for 24 days is rescued by the Colombian Navy. (AP)
10 January 2023 – Territorial disputes in the South China Sea
The Supreme Court of the Philippines nullifies the country's Joint Marine Seismic Undertaking agreement with the China National Offshore Oil Corporation and Petrovietnam to conduct joint oil and gas exploration activities within the Philippine exclusive economic zone in the South China Sea since 2005, citing the unconstitutionality of permitting foreign corporations and governments to exploit the country's natural resources. (Reuters via CNN)

WikiProjects

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

Topics


More topics

Categories

Category puzzle
Select [►] to view subcategories Oceans
Oceans
Categories by sea or ocean
Landforms by sea or ocean
Bays by ocean
Fish by ocean
Shipwrecks by ocean
Volcanism by ocean
Seas
Oceans surrounding Antarctica
Arctic Ocean
Atlantic Ocean
Submarine cables
Coasts
Ocean currents
Marine energy
Oceans and seas in fiction
Historical oceans
Indian Ocean
Law of the sea
Ocean maps
Marine conservation
Oceanaria
Oceans-related lists
Pacific Ocean
Submarine pipelines
Ocean pollution
Southern Ocean
Works set on oceans
World Ocean


Seas
Seas
Categories by sea or ocean
Seas by country
Seas by continent
Fish by sea
Shipwrecks by sea
Seas of the Arctic Ocean
Seas of the Atlantic Ocean
Sea in culture
Sea and river deities
Oceans and seas in fiction
Seas of Greenland
Seas of the Indian Ocean
Lists of seas
Marginal seas
Marine energy
Maritime transport
Seas of the Pacific Ocean
Bays by sea
Seas of the Southern Ocean


Oceanography
Oceanography
Oceans
Seas
Oceanography awards
Biological oceanography
Chemical oceanography
Oceanographic expeditions
Ocean exploration
Fracture zones
Oceanographic instrumentation
Oceanography journals
Marine biology
Marine geology
Marine geophysicists
Marine meteorology
Maritime culture
Meteorology
Oceanographers
Oceanographic Time-Series
Oceanographical terminology
Oceanography of Canada
Oceanographic organizations
Paleoceanography
Physical oceanography
Research vessels
Sea ice
Underwater diving companies
Underwater diving sites
Underwater explorers
United States Exploring Expedition
Oceanography stubs

Associated Wikimedia

The following Wikimedia Foundation sister projects provide more on this subject:

Admiralty law

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