Portal:Oceans

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Introduction

Surface view of the Atlantic Ocean

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...)

Waves in Pacifica, California

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...)

Maritime history dates back thousands of years. In ancient maritime history, evidence of maritime trade between civilizations dates back at least two millennia. The first prehistoric boats are presumed to have been dugout canoes which were developed independently by various Stone Age populations. In ancient history, various vessels were used for coastal fishing and travel.[obsolete source] A mesolithic boatyard has been found from the Isle of Wight in Britain

The first true ocean-going boats were invented by the Austronesian peoples, using technologies like multihulls, outriggers, crab claw sails, and tanja sails. This enabled the rapid spread of Austronesians into the islands of both the Indian and the Pacific Oceans, known as the Austronesian expansion. They laid the groundwork for the maritime trade routes into South Asia and the Arabian Sea by around 1000 to 600 BC, which would later become the Maritime Silk Road. (Full article...)
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Painting of two sailing ships, sails fully rigged, exchanging cannonfire on a choppy blue-green sea

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

In the news

23 June 2024 – Red Sea crisis
The Houthis claim to have carried out a joint military operation with the Islamic Resistance in Iraq to target four vessels in the Port of Haifa, Israel. (Al Jazeera)
20 June 2024 –
A cruise ship rescues 68 migrants and finds five bodies in a wooden dinghy that was drifting off the Canary Islands, Spain. (ABC News)
18 June 2024 – Red Sea crisis
Attacks on the MV Tutor
The Liberia-flagged MV Tutor sinks in the Red Sea six days after being attacked by a Houthi unmanned surface vessel and missile. (AP)
14 June 2024 – Red Sea crisis
The United States military launches attacks on and destroys seven 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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Seas


Oceanography

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

Admiralty law

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