->''"A flying boat. What next, an underwater plane?"''
-->--'''Comic Book Guy''', ''VideoGame/TheSimpsonsGame''

So, you've got a nice team of heroes, each with a specialty and associated GiantRobot or vehicle. A fiery leader, a strong man, a flying ace, a cute [[TheChick Chick]] for good measure, and a naval master.

You hit an instant snag, though. Once you are out of range of the ocean, your naval man's mech loses its special value to the team. How does one make up for this Aquaman-level flaw?

Invoke the power of IfItSwimsItFlies. Suddenly, that seafaring machine takes to the air.

It's not just mecha, by the way. Anything that looks like an aquatic vehicle can, with the right amount of thought or lack thereof, be converted to something that flies through the air or into space. After all, SpaceIsAnOcean, isn't it?

Compare with FlyingSeafoodSpecial, where the inexplicably flying aquatic entities are ''living organisms''.
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!!Examples:

[[foldercontrol]]

[[folder:Anime and Manga]]
* ''{{Mazinger}}'':
** ''Anime/MazingerZ'': Mazinger-Z got upgraded to be able to swim (in episode 18) and fly (in episode 34). However its mobility and speed gets ''severely'' hindered underwater and its weapons do not work properly, so it may count as a subversion.
** ''Anime/GreatMazinger'': Great Mazinger was also equipped to fly and swim, and faced the same problems its antecessor.
** ''Anime/UFORoboGrendizer'': One of its MidSeasonUpgrade -Marine Spacer- was designed to combining with Grendizer and allow it swim and dive. However it also could fly.
* ''Manga/GetterRobo'': Getter is -literally- built around this concept. Depending on how the three jets combine, the form a different robot, capable to fly on Earth and space, fly or burrow underground, or swim and dive.
* ''Anime/RobotRomanceTrilogy'':
** ''Anime/CombattlerV'': Battle Marine, one of the machines that form the body of the HumongousMecha -to be specific, the legs- is able to swim and fly -and it also carries around the Battle Tank, that cannot fly on its own).
** ''Anime/VoltesV'': Volt Frigate, the machine that forms the legs of Voltes V, also is able to fly and swim.
* The vehicles of the Sea Team from ''{{Dairugger XV}}'', a.k.a. ''Vehicle {{Voltron}}'', can all fly. Then again, so can the Land Team's.
* The ''[[CoolPlane God Phoenix]]'' in ''Anime/ScienceNinjaTeamGatchaman''. Its launch base is underwater.
* Inverted in ''GurrenLagann'': the Dai-Gurren, which looks like a ship with legs and a torso, was originally a surface battleship. Later, Leeron converted it to be seaworthy (by tacking on a giant [[strike:oar]] paddle and a pair of flippers...), though they couldn't go very deep. Even later, it nabbed one of the flight spheres of the Dai-Gunten, Cytomander's FlyingAircraftCarrier, gaining the ability of unassisted flight... even though Parallel Works 8 shows us hundreds of these battling the Anti-Spirals in high Earth orbit.
** Similar inversion occured in the final season: while Ganmen were shown earlier as not being water-proof, they CAN fly and fight in space. The Gurren-Lagann doesn't have this problem.
*** It can be explained away by saying that the Ganmen being designed for space battles means that they're designed to keep overpressure ''inside'', not to keep it ''out''. As for the Gurren-Lagann's self-sealing... it's the only pre-TimeSkip Ganmen shown to use reality-warping Spiral Energy (aside from the [[EvilCounterpart Lazengann]], of course).
** A third inversion: the Moon-sized Chouginga Dai-Gurren can apparently operate as a submarine, even though there's no ocean big enough for it... though when they got caught in the ocean-like Death Spiral Field, the ship was almost crushed by the pressure.
* ''SpaceBattleshipYamato'' has it both ways: it is an ex-sea battleship that was reconfigured into a space battleship, but it can still go on water, and can indeed go underwater and survive if absolutely necessary.
* ''SuperAtragon'': The undersea battleship ''Ra'' is given exactly two scenes where it is shown flying; neither instance of her flight has any plot relevance.
* Taken to ridiculous levels in ''[[Anime/{{Pokemon2000}} Pokémon: The Movie 2000]]'', where Melody's sailboat--which is apparently ''just a regular sailboat''--is made to fly above the waves when they need to go faster. Complete with the following dialogue:
-->'''Ash:''' This thing ''flies?!?''\\
'''Melody:''' If you know how.
* About 90% of aquatic ''{{Zoids}}'' can fly, [[SandIsWater swim in sand]], or both.
* Inverted with the ''Ptolemy II'' in ''{{Gundam 00}}'', which starts as a spaceship, but is also capable of atmospheric and underwater operation.
* Inverted in ''Anime/GaikingLegendOfDaikuMaryu''; the [[CoolPlane Stinger and Serpent flying vehicles]] can also operate underwater. Played straight with the titular [[SuperRobot Gaiking]], who can operate in both the air and underwater, although not as well as [[CombiningRobot when combined with either the Stinger or the Crab Banker respectively]].
[[/folder]]

[[folder:Comic Books]]
* MarvelUniverse [[FaceHeelRevolvingDoor Anti-villain-hero]] [[SubMariner Namor the Submariner]] could fly. Because he had wings on his ankles. [[FridgeLogic You know, like underwater creatures do]].
** People forget, Namor isn't just a HalfHumanHybrid (a cross between baseline human and Atlantean), he's a MUTANT hybrid that exhibits a bunch of traits not found in either population.
* The ''Secret of the Swordfish'', the first BlakeAndMortimer adventure, has the titular Swordfish (a rocket-powered plane) launched from an underwater base.
[[/folder]]

[[folder:Film]]
* ''Film/ChittyChittyBangBang'' is a car that can fly and float as well as drive.
* ''WesternAnimation/YellowSubmarine'' - the Yellow Submarine swims and flies equally well.
* The Manta Squadron fighter planes from ''Film/SkyCaptainAndTheWorldOfTomorrow''
* The fully amphibius FutureCopter from ''Film/AIArtificialIntelligence.''
* Not a machine, but definitely an "it", was the flying/swimming steed on Kamino, during ''AttackOftheClones''.
* The Helicarrier from ''Film/TheAvengers'' can serve as both an AirborneAircraftCarrier and a regular aircraft carrier, the former presumably meant for covert operations since it comes with an InvisibilityCloak.
* Craig Mackenzie's submarine ''Alpha'' in ''Film/LatitudeZero'', already shown to be a highly tricked-out CoolBoat earlier in the movie, takes to the air in order to escape destruction at its climax.
* In ''WesternAnimation/DespicableMe2'', Lucy's car can transform into both a submarine and a jet plane.
[[/folder]]

[[folder:Literature]]
* ''Film/ChittyChittyBangBang'' is a car that can fly and float as well as drive.
* In HarryHarrison's novel ''TheDalethEffect'', the main characters use the titular effect to modify a mini-sub to fly to the Moon ''in 4 hours''.
* The climax of ''{{The Course of Empire}}'' features [[spoiler:modern submarines converted to space warships]].
* As seen in the ''RepublicCommandoSeries'', the Mon Calamari have developed a hyperspace-capable submarine.
* At least one ''{{Literature/Animorphs}}'' book had the team on a spacecraft that went up into space, then came plummeting downward and hurtled through the ocean to get to the underwater enterance of the Yeerk Pool. Ax even mentions that most spacecraft have limited underwater capability.
* ''Literature/SeptimusHeap'': The Dragon Boat is both a boat and a flying dragon.
* Jules Verne's story, ''Master of the World'', has the ''Terror'', a combination car, ship, submarine, and airplane.
[[/folder]]

[[folder:Live Action TV]]
* The Delta Flyer of ''Series/StarTrekVoyager'' is capable of surviving deep space pressure as well able to submerge in the depths of an alien ocean world. Justified in this case since that's exactly why they built it, to have a more versatile shuttle craft capable of handling a wider variety of missions than the standard issue ones.
* The small craft from ''Series/VoyageToTheBottomOfTheSea'' was a flying submarine. The "main" submarine [[CoolBoat S.S.R.N Seaview]], however, didn't fly.
* This is a major plot point in the Creator/DanielPinkwater book ''Yobgorgle: Mystery Monster of Lake Ontario''. This book's version of the FlyingDutchman cannot bring any ship of his, including the pig-shaped submarine he currently lives on, within a certain distance of the shore.[[note]]Before you ask, ''no'' he can't swim and ''yes'' a life preserver or another person helping him swim counts as a "ship".[[/note]] The protagonist figures out that if they get the sub to hydroplane fast enough to fly it won't be a ''ship'', it'll be an ''airplane'', which doesn't fall under the [[ExactWords rules of the curse]].
* ''Series/KamenRiderDecade'': Kamen Rider Abyss' Contract Monsters, Abysshammer and Abysslasher, are normally anthropomorphic shark monsters. However, his Final Vent card fuses them into Abyssodon, a gigantic hammerhead[=/=]sawshark combo that - you guessed it - swims AND flies.
* ''Franchise/SuperSentai''/''Franchise/PowerRangers'' has a few examples
** ''Series/ChoujuuSentaiLiveman'': Averted: Aqua Dolphin, when not in the water, rolls on the ground.
** ''Series/HyakujuuSentaiGaoranger''/''Series/PowerRangersWildForce'': Gao Shark / Shark Zord fits it to a tee. While on Animeria, it's always shown in the water. The moment it is summoned to earth, it's flying right alongside Gao Eagle. This gets egregious when the Rangers actually mimic their animals' movements in chase scenes (averted in ''Wild Force'' by giving them {{Cool Bike}}s) and [=GaoBlue=] is FLYING beside Yellow (the Eagle).
*** There's also the {{SixthRanger}}'s Hammerhead Shark Zord, though it isn't featured as prominently as the Shark Zord due to not being the main zord for its corresponding ranger. In its first appearance, when the SixthRanger is still evil, it actually engages the Shark and Eagle Zords in a midair battle.
** ''Series/NinpuuSentaiHurricaneger''/''Series/PowerRangersNinjaStorm'': Zigzagged by Hurricane Dolphin / Dolphin Zord - StockFootage shows it "swimming" along the ground, but it flies in the occasional fight where the mecha don't immediately combine.
** ''Series/JukenSentaiGekiranger''/''Series/PowerRangersJungleFury'': Possibly played straight with Geki Penguin[=/=]Penguin Spirit, which flies about on a hover board.
** ''Series/EngineSentaiGoOnger''/''Series/PowerRangersRPM'': Played with, as the mecha are animal/vehicle hybrids and flight ability is based on the ''vehicle'' half: Birca/Tail Spinner averts it being an orca-cycle and Jumbowhale/Whale Zord justifies it, being a whale-plane. In fact, the Whale Zord is an inversion, as the plane was built and ''then'' given its aquatic characteristics. MetaGuy Ziggy even lampshades it, asking "Why'd you make it a whale? Whales don't fly!"
** ''Series/SamuraiSentaiShinkenger''/''Series/PowerRangersSamurai'': Thrice over. Kame, Kajiki, and Ika Origami/Turtle, Swordfish, and "Octo" (squid) Zords are all shown flying in combat. Ika is the only one to truly follow the trope though, as it spends it's off time in a fish tank.
** ''Series/TensouSentaiGoseiger''/''Series/PowerRangersMegaforce'' Season 1: Gosei Shark averts it by moving on the ground when not in the water. The [[MechaExpansionPack Sea(ick) Brothers]] play it straight a bit, though, but that's hardly unique to them; all the "Brothers" sets of mecha can fly around.
** ''Series/KaizokuSentaiGokaiger''/''Megaforce'' Season 2: The Rangers have [=GokaiGalleon=]/Skyship Zord, as befits a {{Pirate}}-themed team. But they're also ''[[SpacePirates Space]]'' [[SpacePirates Pirates]], so the ship is obviously spaceworthy. In addition, there's [=GokaiMarine=]/Sub Zord, which at least has shown it can move about in space (as can the other land mecha).
* The Puddle Jumpers from ''Series/StargateAtlantis'' are capable of underwater operation, atmospheric and space flight.
[[/folder]]

[[folder:Music]]
* In ''Music/QueenOfTheWave'' by Music/PepeDeluxe, the ancient Atlanteans possessed vailx ships, "constructed for both aerial and submarine service".
[[/folder]]

[[folder:Tabletop Games]]
* Inverted in ''TabletopGame/CthulhuTech'', where every mech that can fly can at least move underwater. Not so for aquatic mechs, but, oddly enough, any mech that can swim can at least jump really high.
* The French Magenta class Battleship from ''Main/DystopianWars ''. It's a Battleship that can leviate via a "Gravity Nullification Drive" to become an Aircraft to strike fear into your opponent's air force.
[[/folder]]

[[folder:Video Games]]
* ''{{X-Com}}: Terror From The Deep'' features [=USOs=], Unidentified Submersed Objects (basically, alien submarines), that can fly over land. This is mostly because the game is the original X-Com with new sprites. Oh, and your own flying subs cannot use their weapons unless they're submerged.
** It is at least justified in-game, as the submersibles used by X-Com are equipped with what are essentially underwater jet engines. When they go above water, they're just regular old jet engines.
* ''FinalFantasy'': Many of the airships in the older games look as if they were ships, of the seafaring variety, with the sails replaced by propellors. You explicitly change your normal ship into an airship when you no longer need a boat in ''VideoGame/FinalFantasyIII''.
** In ''VideoGame/FinalFantasyV'', the airship can go from a normal ship to a flying airship mode and back.
*** And once it's in the water, it can change further into a ''submarine''. Pressing the "lift-off" button while sailing asks you whether to go "up" (into the sky) or "down" (into the ocean.)
** The steam-powered airship ''Hilde Garde III'' in ''VideoGame/FinalFantasyIX'' is similarly built from the hull of the ''Blue Narciss'', a sailing vessel.
* ''VideoGame/GoldenSun 2'': You get a ship that is upgraded to an airship... by adding giant flapping wings. Said wings are explicitly powered by the party's magic - specifically, an ability called Hover.
* VideoGame/{{Xenogears}}: The Yggdrasil stars as a [[SandIsWater Sand Sub]], that can ''only'' work on sand. Then it gets [[MidSeasonUpgrade fixed]] after [[PersonOfMassDestruction Id]] sinks it. Later it gets the ability to fly.
* The Empire of the Rising Sun in ''CommandAndConquerRedAlert 3'' uses the Sea-wing/Sky-wing, a fast anti-air submarine that can [[TransformingMecha transform]] into anti-infantry airplanes. And by "transform", we really just mean "take off"; the two forms are identical.
* Vehicles in ''{{Banjo-Kazooie}} Nuts and Bolts'' tend to turn out this way. Plane-ish vehicles tend to be able to navigate underwater easily (if they have the underwater capable cockpits) and Submarine vehicles tend to fly well (if given wings). Make a boat. Then add wings to it. Bam, flying boat!
* In the point-and-click adventure game ''[=AmerZone=]'', you operate a vehicle that not only plays out this trope, but does so in multiple ways: it can fly as either a prop plane or helicopter, navigate the water as a motorboat, sailboat, or fan-propelled swamp boat, and drag itself along the river with a grappling hook.
* In ''Midwinter II: Flames of Freedom'', you have Flying Submarines, which look like manta-rays.
* In the Leviathan DLC for VideoGame/MassEffect3 this trope is inversed; your pilot mentions that the dropship that you are flying in can, in fact, function underwater. Unfortunately, the dropship is knocked out before it gets a chance to demonstrate, and you are forced to find another way underwater.
* Inverted in ''[[Videogame/MechWarrior MechWarrior Living Legends]]'', where the [[SpacePlane Aerospace Fighters]] are perfectly capable of flying around in deep water with no drop in their speed, and likewise, the [[FutureCopter VTOLs]] can fly underwater. However, only one vanilla map (Clearcut) has deep enough water for this to be practical.
[[/folder]]

[[folder:Webcomics]]
* Inverted in ''WebComic/EightBitTheater''; the [[strike:airship]] [[TheAllegedCar death trap]] also serves as a submarine. Quite poorly/surprisingly well, depending on your expectations for a vehicle in that CrapsackWorld.
[[/folder]]

[[folder:Western Animation]]
* The T-Sub of ''WesternAnimation/TeenTitans'' quickly became the T-Ship as more episodes took them into space. Cyborg Lampshades this the first time. "The T-Sub was made for deep sea, not deep space!" He makes it work though.
* Depth Charge of ''WesternAnimation/BeastWars'' has a manta ray beast-mode, and a flight alt-mode. His flight alt-mode, however, is based of the ship he used to come to earth in the first place. True of most Transformers with swimming alt-modes. Most sharkformers can fly, and the Energon toy-only Transformer Sharkticon turns into a submarine/spaceship.
** Several of the ''WesternAnimation/BeastWars'' Fuzors, which are biological mashups of two animals, are part aquatic and part flying animal, in order to avert this. This results in the piranha/bee and hammerhead shark/falcon, which look about as cool as they sounds.
* Syndrome's manta ray jet/submarine from ''TheIncredibles''.
* One Shen Gon Wu from ''WesternAnimation/XiaolinShowdown'' is a large manta ray-shaped vehicle that can either become a jet or a submarine.
* The Ketaks (Atlantean flying vehicles shaped like various sea creatures) from Disney's ''Disney/AtlantisTheLostEmpire''. They are apparantly activated by having a small Atlantean Crystal inserted into a slot, and turned back quarter-way, much like how an actual car is started up.
* [[InvertedTrope Inverted]] in ''{{Futurama}}''. The Planet Express Ship was designed for space, which means it's rated for between zero and one atmospheres of pressure. It manages to survive an unplanned trip to the bottom of the ocean.
* ''Franchise/{{Transformers}}'' has Broadside a triple-changer who can transform into an aircraft carrier and a fighter jet. Do not question the [[YourSizeMayDiffer scale problems involved]].
[[/folder]]

[[folder: Real Life]]
* [[http://en.wikipedia.org/wiki/Flying_boat Flying Boats]] are airplanes made so they can land on water and swim like ships. Also, [[http://en.wikipedia.org/wiki/Flying_submarine Flying submarines]], with WWII, Cold War, and modern flavors!
* Also in the spirit of this trope (though not invoked outright) [[http://en.wikipedia.org/wiki/Submarine_aircraft_carrier Submarine Aircraft Carriers]].
[[/folder]]
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