1 - 20 of 13,006 Works in Alternate Universe - Merpeople
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“I’m a merman, not a siren, you stupid human.”
Aaron sputters. “What kind of insult is that? Andrew is also human!”
“Yeah, but he’s my human,” Neil says petulantly, wrapping his tail around Andrew’s leg, and Andrew’s silly, dumb heart wriggles and flops around in his chest.
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Andrew finally introduces Neil to his family. It goes as well as one would expect.
Series
- Part 4 of fish out of water
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Part of Your World by booksandfairytales111, chiefhiccuphaddock for P_Artsypants, gray_ghost_gal
Fandoms: How to Train Your Dragon (Animated Movies)
16 Jun 2026
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Take Hiccup and Astrid and throw them into a world where he is merman from under the sea, she is the princess of Berk. They have been told the others are monsters, but surely that can't be true, can it?
Hiccup is different than the other merfolk in his pod and he doesn't know why. He can't swim as fast, his tail cramps and seizes, he can feel the cold at certain depths while the others can't, among other things. Toothless, a water dragon, helps him get around while he finds himself fascinated by humans and their creations...and when he catches sight of a certain blonde princess, his life will never be the same.
50+ chapters prepped! -
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Oscar is hired to be a cat sitter at George's parents' seaside property while they're away on vacation. Whether the things he sees out there are real or not is a question that's getting harder and harder to answer.
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Buck knew B Shift had been rough on the gear, it was mentioned during hand over, but he hadn't expected only one working harness for a cliffside rescue.
Or anything that came after the harness snapped and he fell to the water below. But how was he to expect a Pod of man-hating Mermaids or that they couldn't just let him leave?
What was that about a Moon Pool?
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To Court the Mermaid Prince by Sorrowful_Wallflower
Fandoms: Harry Potter - J. K. Rowling
16 Jun 2026
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Regulus has had a crush on James Potter for years, but thinks he's out of reach because he's the crown prince and could have anybody he wants. Why would he pick him?
Jegulus Bingo Prompt: Mermaid AU
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Enjin was just trying to find a place to hide from the storm, and perhaps being a good samaritan for a bit. He surely did not expect to gain something from that.
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salt in the wound by beepbeepblunderbus
Fandoms: Iron Lung (2026), Project Hail Mary (2026)
15 Jun 2026
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Ryland Grace unfortunately became important at work. His boss, Director Eva Stratt, moved him back to the states right after a three-month sabbatical to help Ava Ironchild with a strange issue. Her sanctuary has been struggling with a recent arrival, and someone needs to step in. Grace, for a reason he doesn't understand whatsoever, was the first person Eva thought of to deal with this... at least he gets to see his old friends?
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What The Tide Brought In by girlycards
Fandoms: Bishoujo Senshi Sailor Moon | Pretty Guardian Sailor Moon
15 Jun 2026
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They were all slowly turning to look at him, conversation dying out.
“Hi. I’m Seiya.”
“I found him on the beach, passed out.” She left out the part where he was naked. “Don’t be weird.” She wrinkled her nose. -
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Worn down from years of strife as the last of her kind, Madison once believed happiness was far from reach. Everything begins to change when she meets a man called the Doctor. As secrets and sorrows are shared between them, the pair finds comfort together amidst the stars. Madison can only hope that this time things will be different, even if the universe has other plans for her.
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Nikola didn’t know why he had come here… or maybe he did, deep down. He was certain of it. Mermen existed. Everyone had thought he was crazy when he decided to change his field of study to devote himself to the marine world. But Nikola was sure of it: those creatures were real.
Series
- Part 7 of 🖤⚡️Nikobeel⚡️🖤
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Mermay Courtship For Beginners (and the Hopeless) by Blizzarris (Nachtnebel), Nachtnebel
Fandoms: Nicktoons (Video Games), Fairly OddParents, The Adventures of Jimmy Neutron: Boy Genius
15 Jun 2026
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Look at this trove, treasures untold
How many wonders can one cavern hold?
Looking around here you'd think
Sure, he's got everythingIsaac got gadgets and gizmos a-plenty
he got whozits and whatzits galore
But is he truly happy all by himself?
Who cares?
No big deal, why crave more ...(He soon finds out that, in fact, he does. No matter how much he convinces himself to be better than these hormone-controlled idiots around him)
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Mers aren't allowed to be seen by humans for their own safety, but Arias breaks that law to save Osora's life when they go overboard during a storm.
Pirate Osora x Merman Arias
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-Class: Mammalia
-Family: Plantae
-Species: Planta var. Independens
Looking at that meager footnote in the document, standing in front of the huge quarantine tank, Nicholas never thought that he would encounter what was a miracle from the pages of exobiology textbooks, swimming right before his eyes. -
There's Plenty of Fish but I Want the One That Bites by Avalanche_of_Xanax
Fandoms: Death Becomes Her - Mattison & Carey/Pennette
15 Jun 2026
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That tug yanks Helen to the ocean and fills her with such a specific, hungry want that she truly can't say she's relaxing at the beach in her own lonely alcove as she watches lazy waves lap at the shore.
Because it feels like she's waiting.
OR:
It's MerMay, so please enjoy a merMadeline x Human Helen fanfic. I have no idea how long this is gonna be so just stick with me here
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Niki is informed that she is betrothed to the Dragon Prince Sapnap. She is not fond of the idea of being betrothed to someone she doesn't know.
Sapnap is curious as to what his new betrothed is like and wants to get to know her.
Niki Nihachu Summer Week Three – Elements: Fire, Water, Earth, Air, Spirit
Series
- Part 4 of Niki Nihachu Summer 2026
- Part 4 of Everything Nikinap
- Part 52 of Niki Nihachu Summer
- Part 35 of All My Niki-Centric Fics
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Little orphan Harry was raised by the sea by his cruel aunt and uncle. His uncle is the mayor of the fishing town. He was told his whore of a mother got pregnant by an unknown man and that she drowned herself in the ocean out of shame shortly after his birth.
Harry is kept away from the ocean by his aunt who seems terrified of the water, but she is actually aware that Harry is not fully human though she has kept it a secret from even her husband out of fear of being punished herself. However one day, Dudley and his friends chases Harry to the cliffs overlooking the ocean, and Piers pushes Harry into the ocean. Harry thought for sure he would drown, however under the waters he transforms into a mythical mermaid.
Harry travels alone in the sea for a while, but he is found by Mer-King Grindelwald's patrol, Severus Snape and Bellatrix Lestrange. Severus recognizes Harry for who he is - the missing child of Lily Evans whom the Mer-King had killed to punish James Potter for daring to have a relationship with a human. What kind of life waits for Harry now?
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Swept to Your Shores by mangogayt for dullhiraeth
Fandoms: 诡秘之主 - 爱潜水的乌贼 | Lord of the Mysteries - Cuttlefish that Loves Diving
15 Jun 2026
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The campfire offers only so much illumination, but the full moon hanging from the starry sky is plentiful. Cast down in an all-encompassing descent, its radiant silver glow captures every detail of the scene before Grisha's eyes: the darkened, damp sand, the shimmering white crest of waves, and the figure emerging from out of the waters.
Grisha's eyesight is enough to see him.
A young merman.
Or: Grisha experiences a prophecy, a shipwreck, and an encounter with something not quite human.
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Pearl of Knowledge, Meant for the Taking by NonExistent19
Fandoms: Percy Jackson and the Olympians - Rick Riordan, Percy Jackson and the Olympians & Related Fandoms - All Media Types
15 Jun 2026
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Sea green eyes narrow in on her, his webbed hands slowly pulling him up the ladder. The ship was tilting towards him, following the weight of the scaled tail hidden beneath the ocean. Annabeth flinched when he finally hauled his upper half inside. His hand snapped out, grabbing her foot and yanking her towards him. Broad muscles wrap around her, sealing her ability to escape as he nuzzles the crook between her neck and shoulder. A slight raspy and pleading voice unfit for the man in front of her flits out, “Wife, what do you mean you’re leaving me? That isn’t true right?”
Now how did she get here? Let’s rewind back to the beginning.
Alternate
manwhatitle: Help! I unknowingly married an obsessive Merman! -
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Newly divorced Obi-Wan notices there's a boy who watches the sunrise near his rented beach house. He is completely, objectively, reasonably normal about this.