Underwater City

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Underwater city.jpg
It seemed a sure bet that by the early '70s we'd be flipping a coin as to whether we'd be spending our holidays on the Moon or at the Poseidon Hilton on the bottom of the Caribbean.

Not just Underwater Ruins or an Underwater Base, but an entire city of people living and "breathing" underwater. It's usually created with futuristic technology or powerful magic, and a popular depiction is to have a fully surviving Atlantis with domes and/or water breathing Fish People or Apparently Human Merfolk. Usually though it's a modern attempt at colonizing the ocean floor, or a villain's secret lair.

As might be expected, living in such a precarious location makes these cities inordinately prone to having something go Horribly Wrong. Be it sabotage causing the dome to break, an undersea volcano activating, or other disasters.

Examples of Underwater City include:


Anime and Manga[edit | hide | hide all]

  • Daphne in the Brilliant Blue: The main cities of the aquatic New Eden were originally Underwater Cities created to escape the apocalypse. Heroine Maia is the last survivor of one of the cities which was destroyed before it could surface.


Comics[edit | hide]

  • In Scion, Ethan discovers an underwater city built by an aquatic sub-species of the Lesser Races who were able to escape their lives of slavery.
  • Both Marvel Comics and DC Comics have versions of Atlantis, although in both cases Atlantis is a big place with multiple cities.
  • There was an arc in Aquaman where half of San Diego slid into the sea following a massive earthquake... and those who survived it instantly adapted to underwater conditions.


Film[edit | hide]


Literature[edit | hide]

  • The Shadow Over Innsmouth by H.P. Lovecraft has Y'ha-nthlei, of the "titanic sunken porticos" and "labyrinths of weedy cyclopean walls." Located off the coast of Massachusetts and home to the Cthulhu-worshipping Deep Ones.
  • Isaac Asimov's Lucky Starr and the Oceans of Venus.
  • Michael Reaves and Steve Perry's novel Dome, which is set in a futuristic underwater lab complex.
  • Underwater colonies are a significant part of the backstory of "The Eve of RUMOKO" by Roger Zelazny.
  • A city of cray (lobster-centaurs) is featured in China Mieville's The Scar.
  • Attack from Atlantis by Lester Del Rey.
  • The great city of hi'Leyi'a on the planet Pacifica, in the Star Trek Novel Verse. First mentioned in Star Trek: Titan, it finally appeared in Losing the Peace.
  • Handled as realistically as possible in "Ocean on Top" by Hal Clement. A colony of humans is established on the ocean floor, using geothermal power to provide light and a specially-made oxygen-carrying dive fluid in place of air. But since the humans are less dense than water, the humans have to wear weights if they want to stay on the bottom or even have neutral buoyancy. They sleep tied to the ceilings of their buildings.


Live Action TV[edit | hide]

  • The Man From Atlantis episode "Crystal Water, Sudden Death".
  • In the first episodes of Stargate Atlantis, the city is underwater. In a subversion of the Gone Horribly Wrong situation mentioned above, when the shield fails, the city surfaces.
    • In a Double Subversion, It didn't happen the first time around: In an alternate timeline, the city was flooded, and Dr. Weir escaped drowning in a time-traveling ship; she then convinced Ancient scientist Janus to add the fail-safe.
  • ORCA in Ocean Girl is halfway between this and Underwater Base. The ORCA City project may be closer to this trope.
  • SeaQuest DSV is set in a world where the ocean floor has been so heavily colonized that there are whole underwater nations.


Tabletop Games[edit | hide]

  • Dungeons & Dragons Known World/Mystara campaign setting. The Kingdom of Aquas, which was once part of the Empire of Alphatia.
    • Naturally, several D&D settings include undersea civilizations of merfolk, tritons, sahuagin or the like. Some of these use air-filled domes as housing for surface-dwelling visitors.
  • Aquilon's Reach has multiple underwater cities, as well as some atop glaciers. Unsurprisingly, they also boast the best navy in game.


Toys[edit | hide]

Video Games[edit | hide]


Web Comics[edit | hide]


Western Animation[edit | hide]