1 - 20 of 12,556 Works in Alternate Universe - Merpeople
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Annie is a well-trained monster hunter that knows just how dangerous sirens can be, if you aren't careful. But there's just something so... odd about the one that spends his days down by the cove that seems to be drawing her in.
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Just a little fun mermaid AU :)
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Dark Blue Moon and the Suffering Sun by IAmTheShpee
Fandoms: Danny Phantom, Batman - All Media Types
16 Feb 2026
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One seeks to return home. The other runs away from home to escort him. Two boys from vastly different backgrounds must swim across the world. However, the vast oceans aren't the only things they must navigate. Between a complex political landscape above and beneath the sea, blood-thirsty government agents, conniving hunters, scheming kings and even their own parents, can these boys survive the journey, or will their own differences tear them apart?
In which Danny Fenton and Damian Wayne swim around the world, and find friends and family at the end of the road.
A story in 2 acts (so far!)
Act 1, The Pacific: Chapters 1-35
Act 2, The South: Chapters 36-Ongoing
Act 3: ...?Series
- Part 1 of Demo’s Mer Obsessions
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Robert had been listening to the Sea ever since he was old enough to read from the Book of the Deep. Unfortunately, that privilege had set a target on his back—literally. Now stranded on unfamiliar shores, he makes a “temporary” career as a night fisherman; but after several people worm their way into his life, it seems his place of residence may not be as temporary as he thought.
Series
- Part 1 of Book of Blue
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“The case is closed, gentlemen. We found the body.”
Commander De Vries' words fell on the dock like a lead anchor.
I was standing in the port of Enkhuizen, next to the Emma, the icy north wind blowing hard, the light rain already turning to snow.
The LN4 was moored two posts away, surrounded by yellow coast guard tape, two technicians in white coats taking pictures of the claw marks on the hull as if they were just a forensic curiosity.
Body.
The word echoed in my head, banging against the walls of my skull.
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In the 1990s, when Lando Norris disappears at sea, Max Verstappen sets out to find his friend—and discovers something impossible. And the ocean will never let him leave.
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Monstershipping by TheChaosHerald
Fandoms: Pocket Monsters | Pokemon (Anime 1997-2023), Yu-Gi-Oh! Duel Monsters (Anime & Manga)
16 Feb 2026
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Monstershipping is a crack ship between Ash Ketchum and Yugi Muto made by me and a friend as a joke which has quickly spun out of control. Let me state that Yugi is 25 in this collection of one shots and Ash is 20. I’m not shipping a 15 year old with a 10 year old.
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Flowers in The Water by doumekiss (watanukiss)
Fandoms: A Song of Ice and Fire - George R. R. Martin
15 Feb 2026
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There were some ships that sank because of the intervention of her family, of her kind, but this wasn't one of them.
Even so, Margaery went to look at the wreckage to see if she could find anything interesting, and she did. It wasn't an object, though, but a girl from the land with red hair and legs instead of a tail, floating on top of one of the ship's wreckage pieces...Series
- Part 146 of 1000 Songs
- Part 2 of ASOIAF Misc AUs
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Richard moves to a quiet island, content to live in his dream house, beside the ocean he’s always feared.
But when one misstep sends him beneath its surface, the water doesn’t let him drown. He wakes up on the beach, disoriented and alone, with the ghost of a touch on his skin.
From that moment, the water begins to watch him back.
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Aqua knew he wasn't the easiest pup to care for, that he struggled where others his age would thrive.
But some mers found it in their hearts to accept someone like him.
Series
- Part 1 of Deep Sea AU
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The Serum by SpinoQueen
Fandoms: Star Wars - All Media Types, Star Wars: The Clone Wars (2008) - All Media Types
15 Feb 2026
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The Mission had started fine. They'd landed and began set up of the Forward Observation Base. So...
1) How were they here
2) What happened
3) Where is Everyone else?!?!?!Series
- Part 1 of The Lost People - Clone Wars Merfolk AU
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don't wait for the tide by vashiane
Fandoms: Heated Rivalry (TV), Game Changers Series - Rachel Reid
15 Feb 2026
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Shane finds a man washed up in the backyard of his family's beachside cottage, one who's left his old home behind in a dramatic and what seems to be permanent way, and Shane, in all his infinite wisdom, offers him a new one.
or, the fic where the Hollanders (mostly Shane) take in a runaway mermaid for a summer.
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Was This Promotion Necessary? by AquaticDream
Fandoms: 呪術廻戦 | Jujutsu Kaisen (Anime), 呪術廻戦 | Jujutsu Kaisen (Manga)
15 Feb 2026
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Yuji was just trying to get by and keep himself alive. After his grandfather died it was just him and his deadbeat older brother, Sukuna. Yuji’s dream job had always been to work with marine animals, it was all due to his hard work that he scored a job at the local aquarium, being a diver who handled sharks. What more could he ask for?
Well…
A sudden promotion changes Yuji’s life for better or for worse: He’d been promoted to a Siren Care Taker.
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Ocean Eyes by EnfantdeVautour
Fandoms: 呪術廻戦 | Jujutsu Kaisen (Manga), 呪術廻戦 | Jujutsu Kaisen (Anime)
15 Feb 2026
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Etymology. 人 (nin, "human") + 魚 (gyo, "fish") noun. a merperson.
or when Getô Suguru, a powerful pirate from the Asian coast, with only revenge as a will to live, saves a strange man from drowning and finds himself losing everything while caring for what he’s been hunting for years.
Series
- Part 1 of Tales of the Sea
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In their Alternate Universe of It's a Terrible Life (Season 4, Episode 17), Dean Smith (Dean Winchester) and Sam Wesson (Sam Winchester) left their nine-to-five lives behind, and here they were in Massachusetts, by the ocean. They routinely traveled, saved lives, hunted monsters, and undertook various odd jobs for money. They were still figuring out how to live and have an income while saving people. They'd managed by selling off their belongings, giving them a small financial cushion until they could find more stable means, but they were now close to running out.
An opportunity arises to hunt a siren, and Dean jumps at it. Sam wanted to hunt something other than ghosts, and the small town is paying for their entire stay, so it's a win-win...Right?
Series
- Part 6 of Creatures of folklore
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Маяки и соломенные шарики by WTF Windbreaker pro draki 2026 (WindbreakerTeam) for nebezkota
Fandoms: Wind Breaker - にいさとる | Nii Satoru (Manga), Wind Breaker (Anime)
15 Feb 2026
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Дом Сакуры — больше не картонная коробка по ощущениям, это логово. До дождей всем Тамоном штукатурили стены, Сугишита рылся в интернете, пока не нашел заговоренные знаки от дурной воды, выводил их краской из морской соли, сосновой смолы и туши с каплей русалочьей крови.
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Bauble by Unspecified_Worm
Fandoms: Transformers - All Media Types, The Transformers (IDW Generation One), Transformers Generation One
14 Feb 2026
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Scavenger finds someone who appreciates his gifts.
Series
- Part 3 of Mermay
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Never Let Me Go by animaheart, rosebabie (animaheart)
Fandoms: 原神 | Genshin Impact (Video Game)
14 Feb 2026
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In which Illuga finds an injured mermaid washed up the shore and decides to rescue him.
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It was a heatwave, so what better way than to end a long day of work with a boat trip while the sun sets? All three of them never knew what fate was actually awaiting them, and unknowingly walked into an adventure that would change all of their lives. Underneath the full moon in the crater of a volcano, they never knew that they would be bestowed a blessing; or in hindsight, a curse?
March, Stelle and Dan Heng have to find out how to balance their new lives while keeping their secrets without any clue what happened, nor what exactly changed. How difficult can keeping secrets really be when you're one drop of water away from spilling everything? Will the shared secret between them drive them closer or actually apart?
OR
Astral Express trio in a H2O inspired / merpeople AU + more modern setting than the canon universe.
(can be read without knowledge of H2O) -
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Zoro didn't mind fishing, but he didn't really care about it. He was a swordsman, first and foremost. The fishing was just a way to make ends meet until he can find a way off Shimotsuki. He didn't have strong feelings for the ocean in general, honestly. It just existed and he lived next to it.
His feelings for the ocean change the same day he accidentally hooks the catch of a lifetime.
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Jaws That Bite by Atsuboo for CookieGalaxyCutter
Fandoms: Gachiakuta (Manga), Gachiakuta (Anime)
14 Feb 2026
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He was smiling. No, positively beaming. But air escaped through his teeth and he covers his mouth, in what Zanka first thinks is a sad attempt to save his life but then he notices his shoulders shaking. Was he laughing? Bubbles float from his hands rapidly and his eyes slowly start to look glassy, lids limp.
Magenta dims.
Or: Mermaid Janka burger with a side of reluctant cannibal merman Zanka fries and a large obsessive pirate Jabber shake
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“Fuck, fuck, fuck!”
In a desperate move, Robert piloted the suit towards the pier and prayed the bomb wouldn’t go off till he reached the beach.
What Robert doesn't know is that there are far more dangerous creatures in the water.
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Basically, Herman, a Mermaid-Siren Prince, found a metal suit in his ocean and saved a strange man from drowning.