This index is for works that focus on merfolk, aquatic sirens and fish people. A work just having a mermaid does not qualify. The mermaid must be one of the main characters, the main threat, or otherwise central to the plot. Such works will invariably include one or more Mer Tropes, and there's a strong chance of at least some inspiration being taken from The Little Mermaid or one of its many adaptations.
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Anime & Manga
- Bermuda Triangle Colorful Pastrale
- Coral Reef Legend Elfie Of The Blue Seas: Protagonist Elfie is an Apparently Human Merfolk and the last of her kind.
- Doraemon: Nobita's Great Battle of the Mermaid King: The gang encounter mermaids and battles an evil merman overlord seeking a magic sword to enslave entire oceans.
- The Little Mermaid
- Lu Over the Wall
- Mahou no Mako-chan: Loosely based on The Little Mermaid, the story's protagonist is a mermaid princess named Mako who's turned into a human but retains some magical powers in the human world.
- Mermaid Melody Pichi Pichi Pitch
- The Mermaid Princess's Guilty Meal
- Mermaid Rhapsody: A one-shot by Tatsumi Fujimoto about a boy bonding with a mermaid whom he gives piano lessons to.
- Mermaid Saga
- Merman In My Tub
- Monster Musume: One of the main characters is a mermaid named Meroune.
- Muromi-san: Most of the main characters are mermaids.
- My Bride is a Mermaid
- Nagi-Asu: A Lull in the Sea: A coming-of-age and love story involving Apparently Human Merfolk.
- Peach Mermaid
- Ponyo on the Cliff by the Sea: Is very, very loosely based on The Little Mermaid. Ponyo and her sisters resemble the traditional depictions of ningyo (mermaids) from Japanese folklore. Unlike European mermaids, they're basically fish with human faces (although the folkloric ones tend to be far more grotesque and monstrous).
- School Mermaid
- Sea Princess Azuri
- Shinkaigyo no Anko-san: The story takes place in a town where merpeople have been integrating with humans, using a medicine that temporarily splits their tail into a pair of legs so they can live together with them.
- Sinner in the Seabed: A story about a society of merfolk that live at the bottom of the sea, including a mermaid protagonist.
- Splatoon: The Inklings are anthropomorphic squids who can switch between human and squid forms at will.
- Splatoon: Squid Kids Comedy Show: The Inklings are anthropomorphic squids who can switch between human and squid forms at will.
- Tropical-Rouge! Pretty Cure: One of the protagonists is a mermaid.
- Tropic of the Sea
- Umi Monogatari: Two of the three main characters are mermaid sisters named Marin and Urin.
- Aquaman: The eponymous character and other Atlanteans are Apparently Human Merfolk. There are also more traditional mermaids and beings who are animal/sea life mixtures.
- Fathom: About a race of beings who can turn into water or use it as a weapon, among other things.
- Grimm Fairy Tales Presents The Little Mermaid
- Neonomicon: Prominently features the race of Fish People called the Deep Ones.
- Sub-Mariner: The title character and other Atlanteans are Apparently Human Merfolk.
- Thirsty Mermaids
- Safe Havens: Remora, one of the main characters, is a mermaid, though after an event at the end of the Mars trip storyline, she's permanently become half-octopus instead of half-fish, and can travel on land without taking human form. Her son is also a merman who can transform at will, and her husband, although human, can also take merman form.
Eastern European Animation
- An Anthem for Sheltered Bays: An Attack on Titan fanfic where Eren is a merman who marries Levi.
- By the Sea: A Star Wars: The Clone Wars "merfolk AU" where Commander Cody (plus several other Clone Troopers, the Togruta, and a few others) are Disney-style merfolk, complete with their own established marine societies and politics. The plot focuses on Cody's courtship and romance of the human Obi-Wan Kenobi.
- Creatures That Defy Logic: A The Thirteenth Year fanfic that picks up where the movie left off. It follows the main characters Jess, Cody, and Sam through high school while Cody spends his summers as a merman.
- Guppy Love: A My Little Pony: Friendship Is Magic AU fic where Rarity is a mermaid.
- Just Add Water (Akela_Victoire): An Encanto fanfic where Mirabel spontaneously gains a gift that turns her into a mermaid when she touches water.
- Strange Scales: In this The Twilight Saga AU, Bella is kidnapped and transformed into a mermaid by a group of mermaids.
- What The Water Gave Me: A How to Train Your Dragon fanfic in which Hiccup, Astrid, and Valka are turned into merfolk by mermaids.
Films — Animation
- Barbie Fairytopia: Specifically the second film, Mermaidia, which heavily involves merfolk (including the main character turning into a mermaid) and saving the merfolk realm.
- Barbie in a Mermaid Tale
- Barbie: The Pearl Princess: Barbie stars as Lumina, a mermaid girl with the power to manipulate pearls with her mind.
- The Little Mermaid (1989)
- Luca: The protagonists are humanoid sea creatures who turn into humans on dry land.
- Monsters vs. Aliens: One of the main characters is fish man Link.
- Ruby Gillman, Teenage Kraken: The trailer sets up a conflict between shapeshifting Krakens and Merfolk.
- The SpongeBob SquarePants Movie: A large part of the plot revolves around Spongebob and Patrick trying the retrieve the stolen crown of King Neptune, the merman ruler of the sea; his mermaid daughter Princess Mindy aids them in their quest.
- Sweet Sea
Films — Live-Action
- Aquaman (2018): As in the comics it's based on, the eponymous character and other Atlanteans are Apparently Human Merfolk. There are also kingdoms of Fish People and crab people.
- Aquamarine: The eponymous character is a mermaid.
- Arwah Kuntilanak Duyung
- Blue My Mind: A 15-year-old girl named Mia has a Slow Transformation into a Mermaid, Played for Drama and Body Horror.
- Cold Skin: A colony of Fish People get into a feud with a lighthouse keeper.
- Creature from the Black Lagoon: The title character is a Fish Person.
- Cthulhu: The villains are a cult of Half-Human Hybrid Fish People.
- Dagon: The monsters are a village of Fish People and Cthulhumanoids.
- Deadtime Stories: Volume 1: The segment "Wet" features an evil mermaid with a taste for men's flesh.
- Empires Of The Deep (2011): A human falls in love with a mermaid in a fantasy world.
- Evolution (2015): The monsters are some kind of mutated or hyper-evolved sea creature (implied to be starfish) that mimic human form.
- The Horror of Party Beach: The monsters are human corpses infested with microscopic sea life, looking like Fish People.
- Humanoids from the Deep: The title creatures are Fish People.
- Island of the Fishmen: The titular Fishmen are gigantic bipedal human-fish creatures.
- Legend Of Sudsakorn
- The Little Mermaid (2023): A live-action remake of the 1989 animated film.
- The Lure: Two carnivorous mermaids begin working as nightclub performers in 1980s Warsaw.
- Magic Island: Lily, a young mermaid, befriends a group of buccaneers and joins them on their quest for Blackbeard's treasure.
- Maidens Of The Sea (2014): A lonely sailor discovers an island full of mermaids.
- The Mermaid 1904
- The Mermaid: A romantic comedy directed by Stephen Chow about a Chinese mermaid named Shan-shan sent to assassinate a land developer named Liu, who is oblivious that his deep-sea construction project is disrupting a civilization of merfolk who live under the ocean. However, Shan-shan ends up falling in love with Liu...
- The Mermaid 2021
- Mermaid Down (2019)
- A Mermaid For Christmas
- Mermaid Got Married (1994)
- A Mermaid In Paris (2020)
- Mermaid In The Manhole (1988)
- Mermaids 2003: The mermaids shown turn human when on dry land with an added complication: the protagonists also turn into mermaids at low tide every night. Additionally, they're bound by some kind of natural law to grant wishes for humans. If a human says "I wish" within their presence, they're forced to grant it.
- Mermaids: The Body Found: A found footage Mockumentary by Animal Planet about a Government Conspiracy to hide their research into an underwater sonic weapon, and to hide the existence of mermaids, which would have ended the testing prematurely had their existence been revealed.
- Mermaids: The New Evidence: A sequel to the above.
- The Mermaids Of Tiburon (1962)
- Miranda (1948)
- Mr. Peabody and the Mermaid
- Neptune's Daughter (1914): In both this film and its below-listed sequels, Annette Kellerman stars as a mermaid.
- A Daughter of the Gods (1916)
- Queen of the Sea (1918)
- Venus of the South Seas (1924)
- Night Tide: A young sailor on shore leave becomes enamored with a mysterious woman who he suspects is a murderous mermaid.
- Nymph (2014)note : A villainous mermaid is the monster.
- Pirates of the Caribbean: On Stranger Tides: The mermaid Syrena is essential to the plot. She and the other mermaids shown have fangs and are spooky, man-killing rapists.
- Princess 2008: In this Made-for-TV Movie, Shileen Paton stars as a mermaid named Cala, who lives under a pond.
- Scales: Mermaids Are Real
- The Shape of Water: One of the two main characters is a male Fish Person. The other main character is magically given gills in the end and it's implied she may not be entirely human herself.
- She Creature: A carnival barker named Angus discovers a mermaid held captive in a tank by a disturbed old man. Angus steals the mermaid and loads her on a ship headed for America. When the mermaid is discovered, Angus's lover Lily begins to suspect that the mermaid is more dangerous than she first seemed.
- The She-Creature: The titular She-Creature is a primordial ocean-dwelling humanoid.
- Siren Of The Sea (1911)
- Splash: Revolves around the fairytale romance between human Allen Bauer and mermaid Madison.
- Sweetheart: The monster is a Shark Man.
- The Thirteenth Year: A TV film about a boy who discovers he's actually a merman, occurring when he turns 13.
- The Water Phoenix (2017): In this Short Film, an imprisoned mermaid is betrayed by her caretaker and must find a way to escape the aquarium alone.
- Waterworld: The Mariner, played by Kevin Costner, is an example of Apparently Human Merfolk.
- And Then I Turned Into a Mermaid A series of children's drama books focusing on Molly Seabrook a young girl who discovers she's half mermaid and has to navigate the difficulties of secrets, school, friendships, and a crazy family.
- Aquamarine: Centers around a mermaid named Aquamarine who is stranded in a swimming pool after a storm.
- Bad Mermaids
- "Dagon": Centers on a Sea Monster and the Fish People who worship it.
- The Deep (2019) is about a society of merfolk descended from pregnant women thrown off of slave ships.
- Deep Trouble: Much of the plot revolves around the protagonists befriending a mermaid and trying to protect her from scientists who want exploit her.
- Dream Girl: The main character is a mermaid named Aine, who seduces rapists and murderers by sneaking into their rooms at night and hypnotically singing to them. Then, she "accidentally" bumps into them on the street and causes them to fall in love with her and her "quirky" ways. Finally, she kills them and drinks their blood.
- Emily Windsnap: This series of children's fantasy novels follows the adventures of thirteen-year-old Emily Windsnap after she discovers she is half-mermaid.
- "The Figurehead": One of the two main characters is a mermaid who's the daughter of Davy Jones.
- Fins: A young adult novel series about a teen girl named Lily Sanderson who discovers she's a half-mermaid princess.
- Forgive My Fins: The first book, in which Lily first finds out she's both half-merfolk and royalty.
- Fins Are Forever: The second book, in which Lily has to keep her human-hating cousin Dosinia (a new exile from the mer kingdom of Thalassinia) in line.
- Just For Fins: The third and last book, in which Lily has to both help her childhood friend Tellin's kingdom against oceanic climate change and face an ancient mer law that could separate her from her new human boyfriend Quince.
- Forbidden Sea: A girl, living on Windwaithe Island, tries to protect her sister from a mermaid that is living in the surrounding waters.
- Fortune's Fool, the third book in the Tales of the Five Hundred Kingdoms, features a mermaid protagonist named Katya. She and her sisters are the daughters of the Sea King, but they have siren ancestry to give them legs instead of tails (which neatly averts the Mermaid Problem). Only Katya and her father are comfortable on land, however.
- Fred The Mermaid by MaryJanice Davidson.
- "Gills", a short story by David J. Schow, features Fish Person Manphibian.
- The Innsmouth Legacy: Centers on the Deep Ones, a fishlike Human Subspecies.
- Into the Drowning Deep: Mermaids are featured as a unique species of predatory amphibians with eel-like tails, bioluminescent hair, the ability to perfectly mimic any sound they hear, and sexual dimorphism similar to anglerfish.
- Island of the Aunts: A family of merfolk are among the major characters.
- The Juniper Sawfeather trilogy
- The Last Mermaid by Brendan Connell
- Lies Beneath, by Anne Greenwood Brown, centers around a merman named Calder White and the rest of his murderous, man-eating family.
- Deep Betrayal: A sequel to the above that still revolves around Calder and his mermaid family.
- Lilly and Fin: A Mermaid's Tale by Cornelia Funke.
- Lost Voices by Sarah Porter: The main characters are basically humans turned into mermaids. They are given magical voices like the sirens, which they use to lure humans to their deaths. These mermaids/sirens are all formerly human girls who were abused or neglected, and they take vengeance on humanity for the mistreatment in their previous lives by sinking ships and drowning people.
- Magic By The Lake by Edgar Eagar: The children go on an adventure with a mermaid who "sings down a ship." Martha chastises her for luring men to their deaths.
- Mele The Mermaid by Justin Alexander Cecil.
- The Mer: A young woman about to embark on her "perfect" post-college life faces an unexpected and fatal twist during a beach vacation. She is offered a choice between death as a human or immortality as one of the mysterious Mer. The Mer are a race of mermaid-like creatures that are all former humans. Choosing the name Val for herself, she soon finds herself embroiled in a mystery and a love-triangle.
- Mermaid (2011) by Carolyn Turgeon.
- The Mermaid
- The Mermaid Chronicles
- The Mermaid in the Millpond
- Mermaid Moon
- The Mermaid of Black Conch
- The Mermaids trilogy.
- The Mermaid's Daughter
- The Mermaids Madness, the second novel in The Princess Series.
- The Mermaid's Mirror by L.K. Madigan.
- Mermaids of Eriana Kwai by Tiana Warner.
- The Mermaid's Sister
- Mermaid's Song by Alida Van Gores.
- The Mermaid Summer by Mollie Hunter.
- The Mermaid Variations by Rhys Hughes: A series of connected stories about the adventures of a mermaid in a wide variety of locations.
- The Merman's Children by Poul Anderson.
- The Moon and the Sun by Vonda N. McIntyre: Yves and Marie-Josèphe de la Croix are siblings and natural scientists who capture and bring a mermaid to the court of Louis XIV.
- National Geographic on Assignment: Mermaids of the Old West
- Not Quite A Mermaid
- Our Bloody Pearl
- Princesses on the Broken Sea, the eighth story in the Princesses of the Pizza Parlor series, features both Sally Slickskin (who has an octopoid lower body) and the Isurri shark-men.
- The Real Mermaids series by Helene Boudreau.
- "Salt Wine," a short story written by Peter S. Beagle, is about a merman who rewards a sailor who rescued him by giving him the recipe for salt wine. It makes the sailor rich, but then it turns out a small number of those who drink it become transformed into mer-creatures themselves.
- The Sea Fairies by L. Frank Baum: A novel about merfolk.
- The Sea Lady: The titular sea lady is an evil mermaid trying to acclimate to human society.
- The Search For Delicious by Natalie Zane Babbitt: A mermaid child named Ardis helps a fairboy save his kingdom.
- The Secret of Moon Lake by Gloria Tesch (as "Sofia Nova").
- "The Shadow Over Innsmouth": Centers on the Deep Ones, a species of Fish People, and their Half-Human Hybrid kin.
- Siren by Tricia Rayburn.
- Sirena by Donna Jo Napoli: A siren falls in love with a shipwrecked sailor, but is unsure if he loves her or her magical singing.
- Skin of the Sea
- Strawberry Moon
- Syren, the fifth book in the Septimus Heap series, has the eponymous syren described as a mermaid, and she uses her song for malicious purposes.
- The Syrena Legacy
- The Thora series is about a ten-year-old half-mermaid girl.
- To Kill a Kingdom by Alexandra Christio: A loose adaptation of The Little Mermaid where the mermaid is a siren and the prince a siren hunter.
- Underneath - A Merfolk Tale
- Undertow Trilogy: Centers on a species of violent aquatic humanoids.
- Undine: An 1811 German fairytale novella about a water spirit who marries a human knight in order to gain an immortal soul.
- The Vazula Chronicles
- Village of the Mermaids
- Voyage of the Basset: Mermaids play a key role by using their hauntingly beautiful voices to get their pet sea serpent to save ships from crashing on rocks.
- In The Water-Babies, abused and neglected children are transformed after death into tiny people who have both lungs and gills and can live in rivers or the ocean.
- The Waterfire Saga: Revolves around six mermaids' quest to destroy Abbadon, the beast that sank Atlantis. Most of the heroines are from oceanic kingdoms, but a few are from inland rivers like the Amazon or the Mississippi.
- Watersong: Lexi, Penn, and Thea, the three main villains, are mermaid-like sirens.
- Wet Magic by E. Nesbit: Four children hear that a mermaid has been captured by a circus and rescue her. Their reward is to visit the hidden kingdom of the mermaids.
- "When Water Sang Fire", one of the short stories from The Language of Thorns, is about a mermaid with magic singing powers who gets caught in the political games of the mermaids' royal family.
- Danny And The Mermaid: A pilot episode for a series that didn't get picked up.
- H₂O: Just Add Water: Is about three girls who turn into mermaids after swimming in a magical pool during the full moon.
- The Idle Mermaid: A tvN romantic comedy-drama series.
- The Legend Of The Blue Sea: An SBS drama series about a fisherman who catches but then releases a mermaid.
- Little Mermaid's Island: A failed live-action spin-off series that was cancelled during development.
- The Man From Atlantis: The eponymous character is an Apparently Human Merfolk.
- Ocean Girl: The titular heroine is an Apparently Human Merfolk.
- The Rules of Love: The main character is a merman named Yang Luo Tian who slowly becomes a mermaid after saving Lie Heng Yu from drowning.
- Siren (2018): One of the main characters is a young adult mermaid named Ryn Fisher, and the series' setting of Bristol Cove is known in legends as being a former home to merfolk.
- Tidelands (Netflix): The plot revolves around a small town conspiracy involving sirens.
- Courtship of the Mermaid by Ninja Sex Party.
- Madonna's music video Cherish features a trio of mermen leaping out of the waves as the singer frolics on the beach, as well as a young mer-child who becomes a human at the end of the song. The song is later used in her live performance of Blond Ambition Tour, where three of her backup dancers emerge from beneath the stage dressed as mermen.
- "FT Nesli - Mermaid" (2008) by Turkish singer Neslihan Evruz from the album Mermaid.
- Jarrod and the Mermaids, a recently-formed high school band from New Zealand.
- "The Keeper of the Eddystone Light," a song by American folk music quartet The Weavers, is about the singer's father falling in love with, marrying, and having children with a mermaid. One of said kids is the singer himself.
- sasakure.UK's "Little Cry of the Abyss''.
- "Mermaid" (2011) by Japanese group Aldious. The PV had one of the girls of the band dress as a mermaid.
- Mermaid (2001): An album released by Danish bubblegum singer Ni-Ni (a.k.a. Nynne Qvortup), which includes the song "A Mermaid's Tale."
- "Mermaid" (2012) by American pop rock band Train from their album California 37.
- The Regina Spektor song "Mermaid."
- Shel Silverstein's Bawdy Song "The Mermaid."
- "Mermaid" (2007) by the Japanese pop group SMAP.
- "Mermaid Motel" (2010) by Lana Del Rey.
- "Mermaid Sashimi" by Mexican singer Juan Son.
- The music video for the 2018 song "Only You" by Cheat Codes ft. Little Mix features an LGBT narrative with a mermaid and a lonely girl.
- "Turn Loose the Mermaids" (2011) by Finnish symphonic power metal band Nightwish from their album Imaginaerum.
- Russian band Otava Yo's video for their song "What Songs" shows a young man who, while travelling by bus, frequently sees a girl whose beauty drives him mad with a need to get nearer to her. He is thwarted at every turn by people and things that block him, until at the end of the song he pursues her by night into a dark forest. Coming to a lake at the first light of day, he hears a splash and sees the floral garland she was wearing floating on the water. Then a hand rises out of the lake and pulls the garland underwater, and the realization sets in - she wasn't fully human, but a rusalka, a freshwater mermaid from Russian folklore.
Myths and Religion
- Aquaria: The heroine is a combination of Apparently Human Merfolk and Fish People.
- At Night in a Party: The Whisper of the Sea: The titular Whisper of the Sea came from a magical, redheaded mermaid named Rittie, as she was was trapped deep inside the shipwreck. If you take the time to pick her up, she triples Karin's Oxygen Meter and insures that the player receives the Golden Ending by preventing her from drowning when she successfully escapes the sunken ship.
- Coral Island
- Insaniquarium: A mermaid named Meryl appears as the hostess of the game. She also appears as a pet, and her ability is that she sings, which makes the guppies drop more money.
- Khimera: Destroy All Monster Girls: One of the members of the Sea Spiders pirate crew is a mermaid, and the Player Character is a part-mermaid Heinz Hybrid.
- The Little Mermaid
- Ariel the Little Mermaid
- The Little Mermaid II: Pinball Frenzy
- The Little Mermaid: Magic in Two Kingdoms
- Disney's The Little Mermaid: Ariel's Undersea Adventure
- Ariel's Musical Surprise
- The Little Mermaid: Undersea Treasures
- Lone Siren: The titular siren of this free exploration game is actually a mermaid.
- Mermaid Swamp: Heavily inspired by mermaids of Japanese folklore (ningyo); it takes place in a swamp believed to be cursed by a mermaid's ghost. It is revealed that the 'mermaid' wasn't a real mermaid, though mermaids still feature prominently in the game's story.
- Ningyo no Rakuin (lit. Mark of the Mermaid) have the players exploring the mermaid myth in a mysterious island, only to find themselves knee-deep in Lovecraftian horror.
- Perfect World: With the Rising Tide expansion introducing a playable race of Merfolk called the Tideborn.
- Shinkai Densetsu Meremanoid: The player takes the role of a mermaid trying to find the secrets of her race.
- Splatoon: The Inklings and Octolings are anthropomorphic cephalopods who can switch between human and aquatic forms at will. Various other aquatic species are represented by NPCs, such as Spyke the sea urchin and Sheldon the horseshoe crab. Later entries introduces literal fish people (at least outside of the background in-universe bands) in the form of the Salmonids, aggressive mutant salmon who are the main antagonists of the "Salmon Run" mode.
- The Lovers (2023): A sapphic, romantic thriller between a human seafood chef and a mermaid.
- Bailin and Li Yun is about a researcher and an Arctic mermaid who're trying to find their places in the world, with some Interspecies Romance splashed about.
- Castle Swimmer: The main character was created to fulfill the prophecies of every mer kingdom in the sea by the enigmatic God of the Surface.
- Kaiten Mutenmaru: One of the main characters in Season 2 is the princess of the mermaids.
- The Little Trashmaid: The main character Tidy is a mermaid and it focuses on how she interacts with the widespread pollution of the ocean.
- Pearls of Mer is about a mermaid who gains legs when on dry land.
- Selkie: Title character Selkie is a Sarnothi, an amphibious, cold-blooded humanoid.
- Siren's Lament: Main character Lyra is transformed into a mermaid by the kiss of a merman who saves her from drowning.
- The Sweetness Of Salt: A sapphic love tale between a human witch and a mermaid.
- Looming Gaia: Alaine, one of the Freelance Good Guys, is a human who was turned into a mermaid. Other merfolk also appear, such as sirene and cecaelia.
- Mermaid Miracles
- Three Little Fish and a Bird: The "three little fish" in the title are a trio of merman brothers.
- Xanadu (Storyverse): Several stories focus on a group of people turned into Mermaids (and the occasional Merman) as a result of the eponymous event. One POV character, a girl named Hannah, was turned into a Vulcan-Mermaid hybrid as a result of switching between costumes when the event occurred.
- Bubble Guppies: All six of the main characters are merfolk.
- H₂O: Mermaid Adventures
- The Little Mermaid (1992)
- Monsters vs. Aliens (2013): Link, one of the main characters, is an example of Fish People.
- Saban's Adventures of the Little Mermaid
- Santiago of the Seas: Lorelai, one of the main characters, is a 150-year-old mermaid who can switch between her mermaid form and that of a young human girl thanks to a magic pearl bracelet.
- Sea Princesses
- Zig & Sharko: One of the main characters is Marina the mermaid.