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| {{Status|Canon}}
| | Water is a common chemical substance that is essential to all known forms of life. In typical usage, water refers only to its liquid form or state, but the substance also has a solid state, ice, and a gaseous state, water vapor. About 1,460 teratonnes (Tt) of water covers 71% of the Earth's surface, mostly in oceans and other large water bodies, with 1.6% of water below ground in aquifers and 0.001% in the air as vapor, clouds (formed of solid and liquid water particles suspended in air), and precipitation.[2] Some of the Earth's water is contained within man-made and natural objects near the Earth's surface such as water towers, animal and plant bodies, manufactured products, and food stores. |
| {{Wikipedia}}
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| [[File:H5G-Csurdon Sea.png|thumb|right|300px|The [[Csurdon Sea]] on [[Sanghelios]].]]
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| '''Water''', chemical formula '''H<sub>2</sub>O''', is a common chemical substance. Its chemical make-up is a bond of two [[hydrogen]] atoms and a single [[oxygen]] atom.
| | On [[Earth]], Saltwater oceans hold 97% of surface water, glaciers and polar ice caps 2.4%, and other land surface water such as rivers and lakes 0.6%. Water moves continually through a cycle of evaporation or transpiration (evapotranspiration), precipitation, and runoff, usually reaching the sea. Winds carry water vapor over land at the same rate as runoff into the sea, about 36 Tt per year. Over land, evaporation and transpiration contribute another 71 Tt per year to the precipitation of 107 Tt per year over land. Some water is trapped for varying periods in ice caps, glaciers, aquifers, or in lakes, sometimes providing fresh water for life on land. Clean, fresh water is essential to human and other life. However, in many parts of the world - especially developing countries - it is in short supply. Water is a solvent for a wide variety of chemical substances. |
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| ==Universe and lore==
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| ===Geography and ecology===
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| [[File:H5G Fathom Ocean.png|thumb|right|300px|A paelosur in Beta Gabriel's oceans.]]
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| Water is found throughout the [[Milky Way|galaxy]] across many [[planet]]s within a variety of climates; water on these worlds can be found in the form of streams, rivers, ponds, [[:Category:Bodies of water|larger bodies]] like lakes and seas, and even in the form of ice. [[Forerunner]] installations such as [[shield world]]s and [[Halo Array|Halo installation]]s also commonly include these geographical features despite their artificial nature.{{Ref/Level|Id=DeltaHalo|H2|[[Delta Halo]]}}{{Ref/Level|Id=Covenant|H3|[[The Covenant (level)]]}}{{Ref/Level|Id=ShieldWorld|HW|[[Shield World (level)]]}} Many beings found on both natural and artificial worlds live predominately in the water, such as [[sea worm]]s and [[paelosur]]s.{{Ref/Level|Id=SilentCart|HCE|[[The Silent Cartographer]]}}{{Ref/Site|URL=https://www.halowaypoint.com/en-us/news/canon-fodder-fauna-getaway|Site=Halo Waypoint|Page=Canon Fodder - Fauna Getaway}} Even among the creatures that do not live within it, many terrestrial creatures are known to drink water.{{Ref/Marketing|Id=HIT|HINF|[[Halo Infinite announcement trailer|''Halo Infinite'' announcement trailer]]|Detail=[[Deer and deer-like creatures|Deer]] drinking water.}}{{Ref/Novel|Id=HHITD18|HitD|Chapter=18}}
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| ===Uses=== | | ==In Halo== |
| Sentient species utilize water for a number of purposes. [[Human]]s have developed [[Human marine craft|vehicles specifically to traverse]] those water bodies, even creating seaborne warships such as the {{Class|Crassus|supercarrier}}.{{Ref/Site|Id=CFStrike|URL=https://www.halowaypoint.com/news/canon-fodder-ship-strike|Site=Halo Waypoint|Page=Canon Fodder - Ship Strike|D=20|M=04|Y=2023}} Water is often used by humans for drinking, and water products like [[H2Oh! Vitamin Water]] are common sights.{{Ref/Map|HI|[[Bazaar]]}} The [[Global Water Campaign]] and its [[GWC Trans-African Pipelines]] were designed to transport clean melted water from [[Mount Kilimanjaro]] across the entire [[Africa]]n continent on [[Earth]]. Multiple facilities of the GWC, including [[A2 Hydroelectric Facility]] and [[Voi Municipal Water Pump House 03]], were sites of combat during the [[Battle of Earth]].{{Ref/Level|H3|[[Sierra 117]]}}{{Ref/Level|H3|[[Tsavo Highway]]}} Human engineers have also used water for electricity generation at facilities like the [[Ütközet hydroelectric power plant]] on [[Reach]] and the [[Axys]] [[Recharge Water Treatment Facility]]{{Ref/Level|HR|[[Nightfall]]}}{{Ref/Site|Id=CFShowcase|URL=https://www.halowaypoint.com/en-us/news/showcase-sensitive|Site=Halo Waypoint|Page=Canon Fodder - Showcase Sensitive|D=16|M=6|Y=2021}}{{Ref/Game|Id=watertreatment|HI|[[Forge]] [[Forge objects|object]] description}} For the purposes of subsurface research, humanity has also created underwater facilities like [[Beta Gabriel]]'s [[Fathom Station]] and submarines like the [[SS Murrill|SS ''Murrill'']].<ref name="universe">[https://www.halowaypoint.com/en-us/universe/locations/fathom-station '''Halo Waypoint''': ''Fathom Station'']</ref>
| | *Found in six of the ten levels of [[Halo: Combat Evolved]], nine of [[Halo 2]]'s levels, and almost all of [[Halo 3]]'s levels, in some form or another. |
| | *Mentioned in [[Halo: Contact Harvest]]. Private Jenkins drinks it during some of the training exercises, when the company goes on runs, and during breaks. |
| | *[[Frankie|Frank O'Conner]] is a self-confessed fan of video-game water. |
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| [[File:HTMCC-H2A Terminals GonnaNeedABiggerBoat.png|thumb|left|250px|Ancient Sangheili sailing on their homeworld's violent seas.]] | | [[Category: Materials]] |
| [[Covenant]] engineers have made use of [[Wikipedia:Hydropower|hydropower]] for [[plasma]] generation, such as within [[hydro-processing center]]s found on [[Buwan]].{{Ref/Level|HR|[[Penance]]}} Like humanity, the [[Sangheili]] have been to make use of marine craft, both in their ancient history and in the modern era.{{Ref/Generic|Id=Term6|[[Halo 2: Anniversary]]|[[Terminal (Halo 2: Anniversary)|Terminal 6]]}}{{Ref/Novel|Id=TCPp349|TCP|Page=349}}{{Ref/Novel|Id=HitDp60|HitD|Page=60}} Some Sangheili are known to make their living on the ocean, such as the sea-hunters of [[Feldokra]].{{Ref/Book|Id=SeaHunters|Enc22|Page=293}} The [[Dazreme]], another member species of the former Covenant empire, live underwater and occupy sunken Forerunner cities on their water-covered homeworld of [[Reme]].{{Ref/Book|Id=Dazreme|Enc22|Page=214}}
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| [[File:H5G MercyHealingWaters.png|thumb|right|250px|A Forerunner artifact on Sanghelios producing water with healing properties.]]
| | [[Category: Beverages]] |
| The Forerunners have created craft capable of navigating beneath the water, such as [[elevator]]s capable of both vertical movement as well as subsurface navigation.{{Ref/Level|Id=Regret|H2|[[Regret (Halo 2 level)]]}} The [[ecumene]] has been known to construct facilities beneath the surface of their worlds' lakes and oceans,{{Ref/Reuse|Regret}} such as fuel stores and power stations.{{Ref/Book|Id=Feldokra|Enc22|Page=235}} Some Forerunner technology is known to be able to manipulate water, moving it to allow vessels to pass through large bodies of water to access subterranean structures or restraining it with shields to access resources below its surface.{{Ref/Reuse|ShieldWorld}}<ref name="waypoint alluvion">[https://www.halowaypoint.com/en-us/universe/locations/alluvion '''Halo Waypoint''': ''Alluvion'']</ref> Forerunners have also created technology capable of manifesting water, as well as enriching it with [[Wikipedia:Nootropic|nootropic]] compounds and microscopic sprites capable of soothing the mind and healing grievous wounds. One such device can be found amid a temple constructed by ancient Sangheili on [[Sanghelios|their homeworld]].{{Ref/Site|Id=HWCUAnvilLegacyPreview|URL=https://www.halowaypoint.com/en-us/news/anvil-s-legacy-preview|Site=Halo Waypoint|Page=Anvil's Legacy Preview|D=28|M=10|Y=2020}}{{Ref/Site|Id=H5GUpdateAL|URL=https://www.halowaypoint.com/en-us/games/halo-5-guardians/updates/anvils-legacy|Site=Halo Waypoint|Page=Anvil's Legacy|D=28|M=10|Y=2020}}
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| ==Gameplay==
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| Water is a common sight in every ''Halo'' game, from ''[[Halo: Combat Evolved]]'' to ''[[Halo Infinite]]''. In ''[[Halo 3]]'' and ''[[Halo: Reach]]'', bodies and many objects will float on water for a while before sinking.
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| Water is often utilized as a death barrier in some maps and the player is killed upon hitting the water or when hitting the water becomes inevitable. However, in some cases on [[Forge World]] and [[Forge Island]], there are a few water areas that will not kill the player should they enter them.
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| ==Gallery==
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| <gallery>
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| File:HCE Halo Island.jpg|[[Installation 04]]'s [[Cartographer]] is found on an island amid a large ocean.
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| File:Temple on Delta Halo.jpg|A lake on [[Installation 05]].
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| File:Water.jpg|A barrel of water on Earth.
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| File:H3_GruntInWater.jpg|Debris and the body of an [[Unggoy]] floating in water.
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| File:H3_Valhalla_Lake.jpg|Water on [[Installation 00]].
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| File:H3_GhostTownOverhead.jpg|The ruins of [[Mount Kilimanjaro Water Plant|a water purification facility]] used by the Global Water Campaign.
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| File:HW-UNSC-SpiritOfFire-Planet.jpg|The {{UNSCShip|Spirit of Fire}} descends through a breach in a large body of water created by Forerunner technology.
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| File:Pseudo Cephalopod.jpg|An unidentified sea creature in Sanghelios' oceans.
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| File:Halo Reach - Babd Catha Ice Shelf.jpg|The [[Babd Catha Ice Shelf]], an example of frozen water on Reach.
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| File:H2A Campaign MombasaWall.png|Seawalls holding back water in [[Old Mombasa]].
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| File:H5G - ARC.jpg|The [[Sundark Sea]] on [[Alluvion]] held back by Forerunner [[Energy shielding|shields]].
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| File:H5G MercyHealingFountain.png|A fountain shaped in the form of a Sangheili collecting healing water from a Forerunner artifact.
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| File:PL - UncomfortableTruth1.jpg|''[[Morolaath]]'' drinking from a body of water on Installation 00.
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| File:HI Deer.jpg|[[Deer and deer-like creatures|Deer-like creature]]s at a watering hole.
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| File:HINF-SomeMultiplayerMap.jpg|An Axys water treatment facility.
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| File:HOut VadamHarbor.png|Sangheili watercraft in [[Vadam Harbor]] on Sanghelios.
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| </gallery>
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| ==Sources==
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| {{Ref/Sources}}
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| [[Category:Beverages]] | |
| [[Category:Chemical compounds]]
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