ExactlyWhatItSaysOnTheTin, The ability to retract one's body like a turtle or snail. Your Mileage May Very but it can be considered either NightmareFuel or [[RuleOfCool Extremely Awesome]] when a Human has such an ability.

See also TelescopingRobot and RetractableWeapon.

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!!Examples

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[[folder:Anime & Manga]]
* Neiz from the DragonBall movie Cooler's Revenge who has the ability to retract his head into his body like that of a turtle.
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[[folder:Comic Books]]
* [[ComicBook/FantasticFour Mr.Fantastic]] can retract everything, turning into a sphere. That is how he survived exposure to space once.
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[[folder:Films]]
* LiloAndStitch has Stitch with retractable antennae, back spikes and 2nd pair of arms.
** Almost all of Stitches "cousins" have this ability.
* [[Film/InspectorGadget Inspector Gadget 2]] has this happen to Gadget when he ducks a punch in the face at a bar.
* In Film/TheHitchhikersGuideToTheGalaxy, Zaphod retracts one of his heads into his chest from time to time.
* {{Kaiju}} movies starring {{Gamera}}, the flying turtle. Gamera can retract all four of his legs into his shell, then cause fire to spray out of the holes, allowing him to spin around and fly. He can retract his head into his shell the same way, and often does so while flying.
* Toothless from Film/HowToTrainYourDragon has retractable teeth hence his name.
* An early Creator/StephenChow movie, ''The Royal Tramp'', involved a battle with the MadeOfIron villain who could even retract his manparts. But Stephen's character, having grown up in a brothel, learned how to counteract this by shoving something up the [[AssShove backdoor.]]
* The electronic devices in ''TheBraveLittleToaster'' all have retractable faces, with the exception of Radio, who for some reason actually doesn't have a face.
* The ''Film/TeenageMutantNinjaTurtles'' all have the ability to do this. During the final Foot battle of the film, Mikey retracts his head into his shell to keep it from being taken off by a Foot mook's axe. "God, I love being a turtle!"
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[[folder:Literature]]
* TheFutureIsWild has the Flish with a retractable second mouth.
** Slickribbons have the Flishes retractability brought UpToEleven.
* In the ''Literature/JamesBond'' book ''Literature/YouOnlyLiveTwice'' Bond visits a Japanese martial arts training facility, where the fighters have been trained to retract their testes, making them invulnerable to a groin attack. You really do this (if you're a male), but to a lesser extent than they show in the book.
* In ''The City And The Stars'' by ArthurCClarke, future humanity has been engineered so that male genitalia are stored internally when not in use.
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[[folder:Tabletop Games]]
* DungeonsAndDragons. Giant Snapping Turtles are noted as being able to retract their legs and head into their shell, thus improving their armor class.
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[[folder:Video Games]]
* Sephiroth from KingdomHearts has a retractable black wing. Implied in the ''VideoGame/FinalFantasyVII'' series that his black wing is the same as in Kingdom Hearts.
** Genesis and Angeal from CrisisCore also have retractable wings.
* {{Pokemon}} Generation V has the golem-like Golurk who is able to fly this way by retracing its arms and legs.
** Any Pokemon with the ability Withdraw.
** Also Darumakas in battle and in the anime can retract their limbs into their body, giving them the appearance of an egg.
** One of [[OminousOwl Hoothoot's]] legs is retractable.
** Darkrai also has retractable legs.
* In ''VideoGame/FinalFantasyIV'', the turtle monster Cagnazzo is a creepy example of this. He can collapse to invulnerable shell form, even though his beefy humanoid arms and legs are clearly too big to fit in his shell.
* [[VideoGame/FinalFantasyVI Kefka]] from the ''[[DissidiaFinalFantasy Dissidia: Final Fantasy]]'' series has six retractable wings that only detract when he uses the attack "'''''Havoc Wing'''''".
* Algol from [[SoulCalibur Soul Calibur IV]] has [[NightmareFuel 3 on each side retractable kraken like clawed fingeresque tentacles that detract from his chest.]]
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[[folder:Web Originals]]
* A fun image on {{Neopets}} reveals Cybunnies can retract their heads into their body.
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[[folder:Western Animation]]
* Filburt from RockosModernLife Justified that he is a turtle.
* Gary from SpongebobSquarepants also justified knowing he's a snail.
** Also happens to Craig Mammalton in the episode "Sun Bleached".
** Also happens to Patrick in the episode "Not Normal".
* {{Catdog}} has the titular character retract its body like a snail, there's only one episode where the play it rather... [[NightmareFuel Gruesomely]].
* Anything involving Turtles and Snails.
* [[BigBad Shendu]] from ''WesternAnimation/JackieChanAdventures'' normally has arms and legs, but for some reason he actually loses both after being turned into a statue thousands of years ago. He eventually gets his arms and legs back once he's been reverted back from his statue form.
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[[folder:Real Life]]
* Turtles
* Snails
** Snail eyes.
* The glans in the penis and clitoris is this.
* The foreskin in the penis is this too.
** The penis itself is this to most animals.
* The testes are this partially, sometimes to greater extents in some animals.
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