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Not to be confused with the 1995 animated series.

Mythical creatures of mystery: fish, whales, or turtles (there's a definite preference for turtles over any other animal) big enough to be mistaken for islands or even continents have shown up in Mythology and Legends for thousands of years. If it's a turtle, the proper term is Aspidochelone. They are often portrayed as being so large and ancient that soil and plantlife have grown on its back, sometimes ancient species containing something so rare that the hero (or villain) must marvel at it or try to obtain it. Often the hero gets only a brief opportunity to marvel at its existence, before it decides to set out and dive deep underwater, leaving the protagonist high and dry (or wet and drowning if he doesn't manage to get off in time). How the fauna and flora on its back can survive and grow when it frequently dives underwater is rarely addressed.


A Sub-Trope of That's No Moon!.

If Earth is one of these, there's a good chance it's Turtles All the Way Down. If it's a dead turtle, it's a Giant Corpse World.


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    Anime and Manga 
  • In Naruto, Naruto and Killer Bee hide and train on an island turtle (which has long since been guarded by the Cloud Village), which is a very good place to hide because they can get it to move if they need to. And apparently it's not a summon, unlike the usual giant beasts seen. Gai's personal summon is shocked by the size of one of the turtles who promptly informs him it's only a hatchling.
  • El Doradimon from Digimon Savers is one of these.
    • Digimon Tamers has Ebonwumon (aka Xuanwumon). He's got two heads that speak independently. And is a god. And is freakin' awesome.
    • Digimon Xros Wars gives us KingWhamon, who carries the Island Zone on his head.
  • One Piece:
    • One of the movies ("The Giant Mechanical Soldier of Karakuri Castle") is set on one.
    • A canon example with the Island Eater, a giant goldfish that eats islands. Its subsequent feces are mistaken for islands.
    • One also appears at the start of the series twelfth opening. The Straw Hats only realize this after having been playing on the island for some time and end up fleeing.
    • A variation on this is the island of Zou, which is on the back of an ancient elephant.
  • An three part episode of Detective Conan takes place in a turtle shaped island around Okinawa.
  • Genbu is a Spirit King who occasionally tromps around a nearby continent and is covered in ogres. He's also a Grumpy Old Man.
  • In Toriko, one of the Gourmet World's residents is a tortoise that carries an entire fortress city is on its back.
  • In Yu-Gi-Oh!: Capsule Monsters, the island the heroes first board without realizing is the back of an island turtle.
  • In Guardian Fairy Michel, Sitel is a fairy who happens to be one of these. And he can fly.

  • On the Carta Marina of 1539, the English ("Angli") have cast anchor on a giant whale and apparently boil a kettle on its back.

    Card Games 

    Comic Books 
  • The Authority: Infinite City, the place where all the Jenny incarnations that have passed are placed, is a city on the back of a giant turtle.
  • In the Lanfeust comic book series, the Magohamoth isn't exactly a turtle, and it's intelligent and speaks to people telepathically, but it fits this trope otherwise. The protagonists follow its trail to an island off the coast of a river delta, and after some bizarre hallucinations we get a Distant Reaction Shot, and the entire island is what they were looking for. Below the waterline it looks sort of like a manatee. With a volcano on its back.
  • In Forets d'Opale, a series by the author of Lanfeust, a similar creature exists, though much smaller and land-based, clearing tracks through the forests, looking like a six-limbed sea turtle with trees on its back. It gets a Dying Moment of Awesome when it gets rid of an enemy ship by diving under it and ramming it from below, sinking soon after.


  • In Pokédex, Torterra are mentioned to have been mistaken for islands before when they grow large enough and hibernate. They usually get mistaken for hills or other parts of the landscape, but they are also noted to be naturally buoyant and good swimmers, and as such it's common for a sleeping Torterra adrift at sea to be mistaken for an island. It turns out that Sinnoh itself is a Torterra of tremendous size.
  • The Doctor Who fanfic Monster Island has an island called Monster Island which turns out to be a shapeshifting alien monster, one of the Volmiy-Shapebeasts.

    Films — Animated 

    Films — Live-Action 
  • In the 1984 fantasy classic, The Neverending Story, there is a giant turtle Morla who lives in the Swamps of Sadness and is first perceived by Atreyu to be a hill of some sort.
  • In Pokémon Detective Pikachu, what the main characters think is a mountain range is actually a group of Torterra subjected to growth experiments, big enough to play this trope straight.

  • Seas of Blood contains a sleeping Sea Monster mistaken for an island. Essentially, its only purpose is to rob you of some crew members, as the pirates who are exploring the island when it wakes up all meet a watery death.

  • Discworld:
    • Taken to extremes with Great A'tuin, a space-traveling star turtle that carries four less-giant elephants on its back, who in turn carry the Discworld itself on their backs. A Turtle Planet, if you like.
    • There's also a parody in Jingo: Leonard dismisses sailors' tales about giant turtles being mistaken for islands as obvious myths, on the grounds that "you don't get giant turtles that small".
  • In J. R. R. Tolkien's The Adventures of Tom Bombadil, there is a hobbit rhyme about "Fastitocalon," a giant turtle mistaken for an island. Tolkien got the name from an Anglo-Saxon verse bestiary; it was a distortion of the Greek "aspidochelone"="Shield-Turtle."
  • A humongous sea snail in one of the later Doctor Dolittle books.
  • Larry Niven made a reference to this in The Ringworld Engineers, where Louis Wu discounted tales of such creatures, knowing the same stories had been told speciously by Earth sailors. Of course, the Great Ocean on Ringworld is many thousands of times bigger than the puny little puddles on Earth, so it's not wholly unexpected when it's confirmed such "islandfish" really do exist there.
  • The Neverending Story: the wise Morla is disguised as a grassy hillock in the Swamp of Sadness.
  • Hungry Kid Island by Shel Silverstein, about an island that's Exactly What It Says on the Tin: the scalp of a giant hungry child.
    Oh, I'm goin' to Hungry Kid Island,
    Way out in the shimmerin' sea.
    There's probably hungry kids out there
    Who'll share my lunch with me.
    But why call it Hungry Kid Island?
    There's no kids around that I see,
    So I'm goin' to Hungry Kid Island
    To solve this mystery.
  • There's a Turtle Island in the first book of David Drake's The Lord of the Isles series. True to Drake's own brand of "realistic" fantasy, the only life present is sea plants.
  • Near the end of Abarat: Days of Magic, Nights of War Candy Quakenbush washes up on the shores of an island and happily dozes. The island is not actually a turtle, but another kind of creature entirely, with a tree and other foliage growing straight out of its back. Interestingly, Candy first realizes she must be on a creature instead of an island because real islands in the Abarat are frozen at a single hour of the day, and she notices that the light has changed since she washed ashore.
  • The trope is referenced in Star Trek: Titan — Over a Torrent Sea, when the characters observe floating "islands" in the ocean of planet Droplet. Torvig asks a Chelon crewman (as the name suggests, Chelon are turtle-men) if they're relatives of his.
  • Artemis Fowl: The Time Paradox has Kraken, which are described as an "acorn barnacle, albeit a barnacle which could easily house an Olympic Stadium or two". They are often mistaken for islands. They become a plot point and a Chekhov's Gun.
  • A terrestrial variant appears in Iron Council, in which an entire small city is built/carved into the back of a gargantuan tortoise that wanders the plains. People who step off it needn't worry about drowning, but might have to walk a ways to catch up to their home if they stay away long.
  • In a "making of" video by Brandon Sanderson about the writing process of the second The Stormlight Archive book, it's revealed that there's a part of the world with several islands like this. Except, this being Roshar, the giant beasts in question are greatshells, not turtles. Words of Radiance itself reveals they are apparently at least near-sapient as after a minor heroine seriously impressed one of them (which is worshiped by its inhabitants) it gave her a a larkin (a crabdragonwasp thing) as a reward.
  • The Saga of Arrow-Odd: Sailing past Greenland, Odd sights a small island covered with heather and sends five men to explore it. The island goes down, drowning the men. Afterwards Odd learns what looked like an island was the back of the sea-monster Lyngbakr ("Heather-Back").
  • In an already-submerged and miniature example, the baby hermit crab from Pagoo takes shelter in a tiny vacant shell that's attached to a cluster of stalked barnacles, only to be shaken about when his new home starts crawling. He's unwittingly become a tenant of "Traveling Towers", a barnacle-colony atop a snail shell which an adult hermit crab (Pagoo's "landlady") is wearing.
  • In The Reader (2016), Reed and his crew encounter one on their voyage to the end of the world.
  • J.R.R. Tolkein's poem "Fastitocalion" is about a giant sea-turtle who pretends to be an island; when people land on him, he waits until they start to get comfortable, then flips over and dives, drowning them.

  • The Italian singer, Ligabue, had a Fish Island on the cover of his album Arrivederci, Mostro!

    Mythology, Religion, and Legend 
  • The mythologies of several Native American cultures tell of a giant tortoise that rose out of the sea when animals needed land to live on. In fact, the Iroquois Creation Myth has the entire planet as just one really big turtle in an infinite sea. Some current-day Native Americans prefer to use "Turtle Island" instead of "North America".
  • One of the most famous early examples would be the island in the tales of Sinbad the Sailor, which he discovered was on the back of a whale. Before they realize what it is, the crew find many rare fruits and plants on the surface. Due to the fact that he's possibly the unluckiest man of his time, his entire crew manages to escape (the only time they ever, however), and he gets left behind when the whale submerges and is lost at sea for years.
  • Supposedly the origin for the island of Bohol in the Philippines (you can find it as a little speck at the heart of the archipelago) is that a woman fell from the sky, so a turtle turned itself into an island that she could live on. Compare to the Native American story above.
  • In The Voyage of St. Brendan, Brendan and his companions make land on the back of the fish Jasconius at Easter and celebrate Mass. For seven years, Brendan and his companions return to Jasconius on Easter Sunday to celebrate Easter on its back.
  • The Leviathan (or, sometimes, the Kraken) is occasionally portrayed as such. One of the original myths of the Kraken was that it was simply a giant monster that would sleep at the surface for so long that plants would grow on it and ship crews would mistake it for an island. Anyone unfortunate enough to light a fire while ashore would wake the Kraken, which would then submerge and pull the ship down with it.
  • There's an extreme version of this in the pre-Islamic Arabian Mythology, in a turtles all the way down recursive cosmology sense. It's said that our world is located in the back of an angel of God, but he needs to step on a ruby so he wouldn't fall down. This ruby is small enough to be placed in the back of a bull called Kujata, who in turn is small enough to be placed in the back of a fish called Bahamut (now you know where that name came from). And Bahamut is also swimming in an astral ocean. It's said that the true sight of the fish is so overwhelming that freaking Jesus fainted upon seeing a glance of it.
  • Russian folk tales have the Wondrous Whale Fish for this role.
  • Indian (Subcontinent Indian, not Native American Indian) Mythology has it that the world is carried on the backs of four elephants which in turn are carried on the back of a turtle named Akupara. This was likely the inspiration for Great A'Tuin and Torterra.
  • Aztec Mythology told that the land was created from the corpse of Cipactli, a gigantic crocodile. The gods Quetzalcoatl and Tezcatlipoca, who normally hate each others' guts, teamed up to kill the monster. Cipactli stayed at the bottom of the sea, so Tezcatlipoca lowered his foot to lure it to the surface. After getting it bit clean off, the two gods turned into snakes and strangled Cipactli, thus forming the North American continent.
  • Singapore has a particularly localised myth to explain the origins of its own turtle-shaped island, Kusu Island, which houses several temples and is visited more by devotees than tourists. The story goes that a turtle transformed itself into the eponymous island to save two drowning sailors.
  • Myth has it that Indonesia was a giant solidified crocodile, as told in an episode of the Crocodile Hunter.
  • Older Than Feudalism: Pliny the Elder in his Natural History describes a giant fish called pristis, which is so big that sailors have taken it for an island and landed on its back.
  • Several mythical creatures fill this role. Jasconius, Aspidochelone, and Zaratan. Depending on who's telling the story, it's either a turtle, a fish, or even a crab. Often in modern retellings, the creatures are all just one kind of island beast with multiple names.
  • Ares magazine issue #4, "Facts for Fantasy" section. Anglo-Saxon legend calls the whale "Fastitocalon", a creature the color of uncut stone that sometimes sleeps on the ocean surface. Sailors would moor their ships to and land on the "island", even building fires and eating. When the activity woke the whale it would dive underwater, taking the sailors and their ship to their doom.

    Tabletop Games 
  • Dungeons & Dragons
    • Al-Qadim setting. The Zaratan, a huge turtle (200-350 feet across) with rock outcroppings on its shell and flippers that looked like small reefs. When asleep on the surface, it could be mistaken for a small floating island.
    • 1E Oriental Adventures setting adventure OA5 Mad Monkey Vs. Dragon Claw. An uninhabited island is actually a huge dragon turtle (100 yards across) sleeping on the ocean's surface.
    • Dungeon magazine #46 adventure "Floating Rock". The title wandering island is actually a Zaratan from the Al-Qadim campaign setting.
    • D&D Expert rulebook (1980). The dragon turtle monster is so large that sailors have mistaken their hard shells for islands and tied their ships up to them while they were floating on the surface.
  • Space Master supplement Aliens & Artifacts. Living Islands, which can grow up to 2 kilometers in diameter. They can dive under the surface, leaving whatever was on top of them behind.
  • Atlantis: The Lost World generic RPG setting. Leviathans are giant marine turtles 200-400 feet long. Their shells are encrusted with corals, mollusks and seaweed, and when basking on the surface sailors often mistake them for small reefs or islands. If the sailors "go ashore" and are still there when the leviathan dives, the results are disastrous.
  • Fantasy Wargaming. The Kraken is a marine monster that floats just under the surface of the ocean and is large enough to be mistaken for an island. It doesn't notice people walking on it, but it does notice attempts to beach a ship on it.
  • Pathfinder has the Aspidochelone as a high level monster; absolutely massive whales, often more than 500ft across, with rocky hides, they spend most of their lives hibernating between periods of ravenous hunger where they'll consume so much sea life — from schools of fish to giant sea monsters to ships — that they'll devastate the ecosystem for leagues around. While they sleep, dense jungle develops on their back.
  • Numenera: The granthu, a titanic crustacean that lives deep beneath the sea to the west of the main setting. It's big enough that a good-sized city, Joira, has been built on, in and beneath its carapace. The Fish People who inhabit it, who speak about the granthu like humans speak about the Earth, are firmly of the belief that the beast is not unique, and that there are more out there bearing their own cities on their backs.

    Video Games 
  • At least one of the Golden Axe games has a village on the back of a giant turtle, and it actually swims across the sea as you make your way through the level.
  • The Legend of Zelda: Majora's Mask has a giant friendly turtle of an island who takes Link to a dungeon in the middle of a maelstrom. He shows up in the Super Smash Bros. Melee level based on the area, too.
  • In Pokémon, the Turtwig evolutionary family (Torterra especially) is based on the world-on-a-turtle mythology. Turtwig itself is just a large turtle with a leafy twig growing on its head, Grotle is a man-sized with two bushes growing on its back, and Torterra has a tree and a pair of small mountains on its back, and, while not island-sized, is large enough to be occasionally mistaken for a hill.
  • There is one of these in Endless Ocean: Blue World.
  • The Groundshaker boss in Kingdom Hearts II is a huge quadrupedal Heartless which requires a small Colossus Climb to do anything more than chase after it, and it also has a small forest on its back.
  • In an early sequence in Skies of Arcadia, Vyse and Aika briefly mistake the enormous arcwhale Rhaknam for an island. To be fair, it was pretty foggy at the time.
  • Secret of Mana features an island (which you never have to visit) that is allegedly a turtle's back. It certainly looks like it from an overhead view, but nothing ever comes of this fact. (Possibly related is the turtle that the heroes of the distant prequel, Seiken Densetsu 3, use.)
  • Rune Factory Frontier has the aptly-named Whale Island. It gets bonus points for being in the sky.
  • In the final levels of Katamari Damacy, when rolling up the entire world your Katamari will grow large enough to start snatching up entire islands and landforms by the dozen. Some of the islands will actually try to run away from you — not just because Katamari Damacy is really weird, it's also because those 'islands' are actually "Giant Sea Turtles".
  • In King's Bounty: The Legend, a scientist (the would-be king of the humans who gave up his throne For Science!, no less) hypothesizes that the world rests on the back of a giant turtle. He also remarks on how ludicrous an opposing hypothesis that says the world is a giant sphere orbiting a sun in a large void. He's right.
  • Sonic the Hedgehog:
    • Sonic Heroes has a stage called Ocean Palace, which has an area full of giant turtles the teams (other than Team Rose) have to go between via cannons and springs.
    "That turtle is swimming with a block on its back!"
    • In Sonic and the Secret Rings, Levitated Ruin is set entirely in an aerial version of this trope. The stage is a flock of Rukhs in flight (though reimagined as manta rays), each carrying a roughly block-sized chunk of civilization on its back. Sonic travels from one Rukh to another via flying gargoyles who still inhabit the ruins.
  • The fourth World of Warcraft expansion Mists of Pandaria introduces a massive Turtle Island named Shen-zin Su, the Wandering Isle, as the starting zone for the pandaren. The climax of the Pandaren starter story involves the player in a massive effort to save Shun-Zin Su's life.. It's revisited and established as the Order Hall for Monks in the sixth expansion Legion.
  • Tales of Rebirth: The Sacred Beast of Earth, Randgriz, was initially big enough to be mistaken for an island while travelling the sea by the legendary pirate, Airfread. When the Sacred Beasts tell Eugene to find the "Isle of Illusion", the party obtains the pirate's map and realise the island is, in fact, Sunnytown. Randgriz's body became the foundation of the city.
  • Sunless Sea has a variation in the Chelonate, which is the bony carcass of a long-dead zee-turtle that died centuries ago, and was then used by the Chelonites' ancestors to build their homes. It's notably bigger than some of the other nations you visit in terms of raw size.
  • In .hack//G.U., Tartarga is a giant flying turtle that houses the Net Slum, a paradise for bugged PCs and hackers, of which Zelkova is a resident.
  • Scribblenauts Unlimited has Dot the Island, which has a village on it. You have to dive into the ocean below to see the turtle's head and fins.
  • Subnautica has an underwater version in the Reefbacks, enormous leviathans that occasionally swim through the world, large enough that whole ecosystems have grown on their bodies.
  • Pirate 101 has Maruzame castle. The game being set in a World in the Sky, it's a flying turtle, but it still only appears when summoned.
  • Oretoises from the Final Fantasy series seem to grow bigger with each installment. The one from Final Fantasy XV is in the running for the largest Boss in the series. It was mistaken for a mountain for a long time, and it boasts over 5 million HP.
  • In Lunar: The Silver Star, the party hears tales about a moving island, which turns out to be a giant turtle.
  • Corruption of Champions has Venus, a freshwater turtle woman who grew and grew after demons started to pump toxic run off from their mountain factory into the lake. She grew so big that her shell looks like a small island though at this size she'd never try to hurt anyone. Being a fetish RPG with a plot you can partake in sexual activities with her.
  • Fe features a giant deer with trees growing on its legs and back. Later, the swamp area has what appears to be a large pulsating rock formation, which is actually the unconscious serpent queen/mother.

    Web Comics 

    Web Original 
  • This Windows 7 wallpaper, with flying for added awesome.
  • Zoofights: The Snapture became one after vol. 5.
  • SCP Foundation
    • SCP-169 ("The Leviathan") is a sea creature 2,000-8,000 kilometers long that has spent at least the last few millenia just below the surface of the ocean. The rock-like plates protruding from it constitute an archipelago of islands.
    • SCP-1585 ("Red Queen Island"). SCP-1585 is a giant jellyfish 544 meters across. It secretes calcium carbonate, which creates a rigid surface over the upper portion of its bell and causes it to appear to be an island. Many creatures and plants live on its top layer.

    Western Animation 
  • In Popeye the Sailor Meets Sindbad the Sailor, this island is alluded to as being the island where the egotistical, bullying Sinbad lives.
  • In The Ducktators the Japanese duck mistakes a turtle for an island and places a Japanese mandate sign on its back. The turtle then goes out on a Roaring Rampage of Revenge.
  • Avatar: The Last Airbender
    • In the original series, the Lion Turtle Aang meets near the end of his quest masquerades as an island with real trees and other plant life.
    • In the The Legend of Korra, we see that in the ancient past there were a number of Lion Turtles, each with a city of humans on their back that they protected from the dangerous spirits roaming the world. Whenever humans left the city, the lion-turtle would use energybending to give them one of the four types of elemental bending to defend themselves, and then they would return it when they came back to the city. The street-urchin Wan was the first to steal fire from a lion-turtle simply by not returning it when he was supposed to. When he was exiled for bringing fire into the city, the lion-turtle allowed him to keep it so he could protect himself in the wilds.
  • Episode "A Turtle Island" of the Alfred J. Kwak series. The heroes take advantage of the situation by coaxing the turtle to take the island out of the way of an incoming tropical storm.
  • Once in Adventure Time, Finn and Jake visited the City of Thieves. It's built on the shell of a giant dead tortoise in the middle of the desert.
  • One of the "dragons" the titular characters in Dragon Hunters had to face was actually shaped like one of the setting's floating islands, using gold nuggets (actually its boogers) to draw humans so it could eat them. After they asphyxiate him with a boulder on each cavern/nostril, the corpse floats away and becomes another island, with Lian-Chu implying some of the islands had a similar origin.
  • In The Deep, the Nektons come upon one of these.

    Real Life 
  • The Turtle Island cosmology mentioned above in Mythology has become the basis for a famous often-cited "argument" or thought experiment in cosmology and metaphysics known as "Turtles All The Way Down":
    Man #1: If Earth is the back of a giant turtle, then what's holding up the turtle?
    Man #2: Don't be a fool. It's Turtles All the Way Down!
  • The Mary River Turtle and other species that actually grow algae on their shells.
  • The South American mata-mata is a predatory turtle that camouflages itself on the river floor. Its shell resembles a bunch of rocks and its oversized neck and head have skin prolongations that resemble algae (the shell sometimes grow actual algae). Its long, wormlike tongue is waved to bait fish that the mata-mata feeds on. The largest confirmed mata-mata is only 63 cm long, but there are unconfirmed estimations based on fossil shell fragments that are twice or even three times that.
  • It's actually not that uncommon for arrangements of this kind to form among sea life, especially when barnacles are involved. Barnacles will readily colonize any hard surface they can find, including sea animals of sufficient size. The best-known example would be the barnacles that settle on whales, anchoring themselves in the sea mammals' thick skin in an arrangement that benefits the barnacles (who gain regular access to food-rich water as the whales follow krill and plankton blooms) and doesn't much affect the whale one way or the other. Right and bowhead whales in particular are known to develop sizable barnacle "reefs" dotting their heads and jaws. In turn, these barnacle clusters provide home and refuge for other animals, including crustaceans known as whale lice, resulting in tiny floating ecosystems carried on the backs (or, well, faces) of much, much larger creatures.
    • Other barnacle species create similar colonies on the bodies of other sea animals — including, yes, sea turtles, whose shells often become colonized by barnacle reefs of their own.
    • The buoy barnacles of the genus Dosima are an unusual case of this: rather than settling a hard surface like other barnacles, they secrete a foam-like, buoyant float for themselves and spend their lives adrift in the open ocean. It is far from uncommon for multiple such buoys to merge together in a single large floater shared by multiple barnacles, resulting in a little living island that can often provide a home for multiple other organisms, ranging from seaweeds to worms to shrimp to even other barnacle species.
  • Sometimes when a large turtle (such as a snapper) comes out of winter hibernation, it'll still have a clump of dirt clinging its shell, sometimes complete with grass seedlings on top, as seen here. It all washes off the first time the turtle goes for a swim, but seeing this may have inspired the Native American myths regarding this trope.

Alternative Title(s): Whale Island


Example of: