History Main / ArtificialGill

* ''LightNovel/GoblinSlayer'': The Breath spell is normally just used to allow people to breathe underwater. However, Goblin Slayer demonstrates that [[ExactWords the spell accounts for all forms of water]] [[LoopholeAbuse including snow and ice]], which allows him to survive being buried by an avalanche. He also utilizes the RequiredSecondaryPowers of the spell that protect the user from changes in temperature from water immersion to help his companions stay warm in a snowstorm.

[[folder:{{Film}} - Live Action]]

* ''Film/TheAbyss'' had a gooey gel that was hyperoxygenated for super deep sea diving. [[TruthInTelevision This is a real thing]]. The scene with the rat was a real rat really being held under the surface of the liquid and freaking out because it had no idea what was going on. Animal welfare groups were annoyed about it because they thought it was being put in unnecessary distress.

[[folder:Light Novels]]
* ''LightNovel/GoblinSlayer'': The Breath spell is normally just used to allow people to breathe underwater. However, Goblin Slayer demonstrates that [[ExactWords the spell accounts for all forms of water]] [[LoopholeAbuse including snow and ice]], which allows him to survive being buried by an avalanche. He also utilizes the RequiredSecondaryPowers of the spell that protect the user from changes in temperature from water immersion to help his companions stay warm in a snowstorm.
[[/folder]]

* The O2 mask in ''Franchise/RatchetAndClank'' allows Ratchet to survive in toxic atmospheres, underwater, and even space with unlimited air supply.

* In the ''VideoGame/{{Metroid}}'' games, Samus Aran's PoweredArmor has a self-contained life-support system that can function as this - no Gravity Suit required. It even works [[JustForFun/RecycledInSpace in space]]!

* Implied to be how the human characters in the ''{{Franchise/Pokemon}}'' games breathe while exploring underwater areas with Dive.

** ''VideoGame/{{Unreal|I}}'' has SCUBA gears available whenever the player must proceed a long way underwater. They have a limited air supply that runs out pretty quickly, and for some reason you can't just take a whiff from it and hold your breath to make it last longer – if you deactivate it manually, you'll immediately start drowning. The expansion pack features a rare recharging example that also holds more air.

* ''Literature/StarWarsExpandedUniverse'' novels:

* The preferred method of breathing underwater in ''Anime/PokemonTheSeries''.

** On Admiral Ackbar's planet Mon Calamari (seen in ''[[Literature/JediAcademyTrilogy Dark Apprentice]]''), they have flexible, jelly-like breathers called "organic gills" or "oxygen symbiotes" that most species (Sullustans are allergic to the organic gills) can slap over their nose and mouth, where it filters the water into oxygen. The Yuuzhan Vong in the ''Literature/NewJediOrder'' series have a similar creature called a gnullith that covers the nose and mouth, and extends down the windpipe to interface with the lungs directly. It's incredibly useful, even because it doesn't need recharging of any kind, and unlike their other biots, gnulliths cause no pain or discomfort.

* Franchise/DocSavage not only had diving suits more advanced than anything available in RealLife at the time, but also 'oxygen tablets' that supplied oxygen directly to the blood and allowed the users to survive underwater for about two hours.

* The preferred method of breathing underwater in ''Anime/{{Pokemon}}''.

** ''VideoGame/TheLegendOfZeldaOracleGamesOfAges'' has the Mermaid suit. Both ''Ages'' and ''Seasons'' also have the Zora Ring, which allows you to stay submerged in shallow water for as long as you want.

* In the ''VideoGame/{{Metroid}}'' games, Samus Aran's PoweredArmor has a self-contained life-support system that can function as this - no Gravity Suit required. It even works [[RecycledInSpace in space]]!

* In ''WesternAnimation/YoungJustice'', Robin I/ Nightwing carries these as part of his standard equipment. After three missions in a row nearly lead Artemis to drowning, she starts to carry them, too.

* ''WesternAnimation/{{Futurama}}'': The crew is given rebreathers when they find the lost city of Atlanta.
** And [[ToiletHumor suppos]][[AssShove itories]] to help them with the pressure.

[[folder: Live Action TV]]

* ''Anime/BloodBlockadeBattlefront'': [[FishPeople Zed]] uses one to breathe on land. When it gets stolen, though, he has to resort to [[FishbowlHelmet other means...]]

** There's also a Gills potion, which [[ExactlyWhatItSaysOnTheTin makes you grow gills]]. Also lacks the RequiredSecondaryPower of your lungs working normally alongside it, making you suffocate outside of water unless you wear a water-filled Fish Bowl on your head [[FridgeBrilliance which normally suffocates you since there's water inside it.]]

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* Bond has made use of this device.

* ''Film/TheAbyss'' had a gooey gel that was hyperoxygenated for super deep sea diving. [[TruthInTelevision This is a real thing]]. The scene with the rat was a real rat really being held under the surface of the liquid and freaking out because it had no idea what was going on. Animal welfare groups were annoyed about it because they thought it was being put in unnecessary distress.
* At the end of ''Film/SherlockHolmesAGameOfShadows'', [[spoiler:Watson receives Mycroft's oxygen inhaler in a parcel sent by Holmes, who stole the inhaler from his brother and used it to survive when he pulled Moriarty down the Reichenbach falls with him.]]

* Franchise/DocSavage not only had diving suits more advanced than anything available in RealLife at the time, but also 'oxygen tablets' that supplied oxygen directly to the blood and allowed the users to survive underwater for about two hours.
* In ''Literature/DarkLife'', there is liquid oxygen that allows people to live underwater.
* Creator/PoulAnderson's fantasy novel ''Three Hearts and Three Lions'' sees the hero, Holger Carlsen, abducted by a ''nixie'' (a freshwater mermaid - think Rheinmaidens in Wagner opera). She confers on him the gift of being able to live and breathe underwater, but capriciously cancels his artificial gill when he declines her kind offer to live with her underwater forever.

* While they don't come up very often in ''TabletopGame/MageTheAscension'', the Void Engineers have them for their underwater corps (they explore everything, not just space and other dimensions). They're starting to get more notice as of the most recent edition, when many Technocrats have had to relocate to the Void Engineers' UnderwaterBase locations due to the Avatar Storm.

* Implied to be how the human characters in the ''{{Franchise/Pokemon}}'' games breathe while exploring underwater areas with Dive.
* Mario gets one for the Bottle levels in ''VideoGame/SuperMarioSunshine''. It extends the time he can breathe underwater without grabbing coins.
* ''Franchise/TheLegendOfZelda'' series has many items that serve this function:
** Zora's Flippers appear in many of the 2D games, and sometimes allow Link to breathe underwater. Other times, they only allow him to swim in deep water and still require him to come up for air periodically.
** ''VideoGame/TheLegendOfZeldaOcarinaOfTime'' has the Zora Tunic that lets Link breathe underwater.
** ''VideoGame/TheLegendOfZeldaOracleGamesOfAges'' has the Mermaid suit. Both ''Ages'' and ''Seasons'' also have the Zora Ring, which allows you to stay submerged in shallow water for as long as you want.
** ''[[VideoGame/TheLegendOfZeldaTwilightPrincess Twilight Princess]]'' has the Zora Armor. When Link is underwater, a small mask covers his nose and mouth, letting him breathe underwater.
* ''VideoGame/CommanderKeen 4'' has a set of scuba gear, but it has an unlimited air supply.
* Oxyale in ''VideoGame/FinalFantasyI''
** ''VideoGame/FinalFantasyVI'' had the diving helmet, which enables Sabin, Cyan, and Gau to travel the underwater Serpent Trench back to Narshe. [[FridgeLogic With a single diving helmet. For three of them.]]
** The underwater materia in ''VideoGame/FinalFantasyVII''

* Variation; it's a spell in ''Videogame/{{MARDEK}}'' that can only be cast by a specific party member. A straighter example would be the Oxyale, a consumable potion that bestows the same effect.
* ''VideoGame/Sonic3AndKnuckles'' featured the bubble shield, which bestowed SuperNotDrowningSkills.
** Knuckles picks up the Air Necklace as one of his power-ups in ''VideoGame/SonicAdventure2'', allowing him to stay under indefinitely.

* A signature item in the Build engine games. ''VideoGame/DukeNukem3D'', ''VideoGame/RedneckRampage'', and ''Videogame/{{Blood}}'' all have it.
* ''VideoGame/WorldOfWarcraft'' makes extensive use of this trope:
** Class-specific spells; druid Aquatic Form, warlock Unending Breath, and shaman Water Breathing.
** Crafting provide water breathing potions and the Deepdive Helmet created by engineering.
** A weapon from Gnomeregan also functions as an Artificial Gill.
** As a whole, Blizzard learned during ''Wrath of the Lich King'' that underwater quests were a pain in the ass and most such quests now provide a renewable Artificial Gill buff. ''Cataclysm'' adds the game's first underwater zone, Vashj'ir, and the first couple of quests are to gain a permanent, zone-only Artificial Gill that also provides substantially faster swim speed, without which Vashj'ir would be all but unplayable.
* In ''VideoGame/ManaKhemia2FallOfAlchemy'', the access to Deep Sea Ruins is opened after you synthesize Air Drop. Said item also returns in ''VideoGame/{{Atelier Rorona|The Alchemist Of Arland}}''

* On the Online Games by Artix Entertainment, it was finally explained why you can breathe underwater in all 5 games: In ''Dragon Fable'', you sink a ship full of water breathing potions that contaminates and enchants the ocean so that you can breathe underwater.
* ''Franchise/BreathOfFire'':
** ''VideoGame/BreathOfFireI'' required you to find a gill key item to let any character other than Gobi (a fishman) travel underwater.
** ''VideoGame/BreathOfFireII'' featured such an item as well.
* ''VideoGame/FalloutNewVegas'' gives you a rebreather if you help the Boomers, but other than a related mission and two caves there is absolutely nothing to see in the depths of Lake Mead. However there are certain areas of Vaults that happen to be submerged.
** It also comes in useful in searching a few submerged areas in the Honest Hearts and Old World Blues {{DLC}}s.

* ''{{VideoGame/Terraria}}'' has an accessory that allows for underwater breathing.
** There's also a Gills potion, which [[ExactlyWhatItSaysOnTheTin makes you grow gills]]. Also lacks the RequiredSecondaryPower of your lungs working normally alongside it, making you suffocate outside of water unless you wear a water-filled Fish Bowl on your head [[FridgeBrilliance which normally suffocates you since there's water inside it.]]

* ''VideoGame/DeusEx'' has [[http://deusex.wikia.com/wiki/Rebreather rebreathers]] that allow you to breathe underwater for a limited time. The [[VideoGame/DeusExHumanRevolution prequel]] features an [[http://deusex.wikia.com/wiki/Augmentations_%28DX3%29#Implanted_Rebreather Implanted Rebreather]] that does the same for poisonous gases but not water (or at least we don't see it do so, because you never go underwater).
* In ''VideoGame/GuildWars2'' every character has one standard, because the dev team did not want to limit the underwater areas' size to how long you could hold your breath.
* The leaves of the Maurera Tree in ''VideoGame/PhantasyStarII'' can be refined into special chewing gum to provide oxygen while travelling underwater; this is used to reach Climatrol.
* The Survival System backpack in ''VideoGame/{{Starbound}}'' allows one to breathe indefinitely underwater, as well as in space.
* Enchanted items of Waterbreathing in the various ''Franchise/TheElderScrolls'' games basically pass on the effect of the Waterbreathing spell or potion. Rings, necklaces, or helmets of Waterbreathing allow the wearer to spend as much time as they like underwater with no ill effect, as long as the item is worn while the Dragonborn is underwater.
* The O2 mask in ''Franchise/RatchetAndClank'' allows Ratchet to survive in toxic atmospheres, underwater, and even space with unlimited air supply.
* ''VideoGame/BorderlandsThePreSequel'': The Oz kit in allows the characters to breathe in space.

* In ''WesternAnimation/TheSimpsons'' Bart once used Milhouse's inhaler as a breathing device.
* ''WesternAnimation/SamuraiJack'': Jack is given a device to help him breathe underwater while swimming to the submerged HumongousMecha.

* ''WesternAnimation/KimPossible'' uses a rebreather provided by Wade in an episode where Drakken seals her in a filled-with-water bottomless pit.

* The Gills of Hamachi from ''WesternAnimation/XiaolinShowdown'', although it achieves this by turning the user into a literal fish person.

* ''WesternAnimation/TheDeep'' has the Nektons using handheld rebreathers when they don't have their full face-covering oxygen masks at hand.

** ''[[VideoGame/TheLegendOfZeldaOracleGames Oracle Of Ages]]'' has the Mermaid suit.
*** Both ''Ages'' and ''Seasons'' also have the Zora Ring, which allows you to stay submerged in shallow water for as long as you want.

* ''WesternAnimation/TheDeep has the Nektons using handheld rebreathers when they don't have their full face-covering oxygen masks at hand.