Underthesea Stories

195 Stories

Alexa problems (PJO/Avengers crossover) by queenfireheart1
#1
Alexa problems (PJO/Avengers cross...by queenfireheart1
Percy just wants a normal life, but when he accidently text Tony Stark how to stitch a wound, his plans at a normal life take a turn for the worse. Tony wants to find ou...
Sea prince by sun_flower33
#2
Sea princeby sun_flower33
Percy is raised under the sea
Grace Meets The Little Mermaid by PrincessRose97
#3
Grace Meets The Little Mermaidby PrincessRose97
Grace was rescued by a mermaid from a hurricane named Ariel who's in love with a human Prince named Eric. Grace would loved to be a mermaid and they had helped from a ev...
Completed
The Extended Version of Ruby Gillman, Teenage Kraken by Lukas7675
#4
The Extended Version of Ruby Gillm...by Lukas7675
Ruby Gillman, Teenage Kraken was my favorite new movie for the summer. Cause I know that this when I saw it, in both Movie Theaters and on Digital. I know that this movi...
Completed
Little Human [Merformers X Child!Human!Reader!] by peacockdragon12345
#5
Little Human [Merformers X Child!H...by Creativity_Juice
The ocean is bigger then you think, and you won't know it is until you look deeper into the abyss.For there lies all life's secrets..~ Author-chan The cover is not mine...
Finding Nemo: Ariel's Adventure! by CatValentine1203
#6
Finding Nemo: Ariel's Adventure!by Cat Valentine
Join Ariel,Dory and Marlin as they travel the entire ocean to search for little Nemo on this Fin-tastic adventure!
My Little Mermaid by Hereforkixkslol
#7
My Little Mermaidby Stxrr_girl_
Prince Eric x Mermaid!Reader. Basically the plot of the Live Action The Little Mermaid 2023 but the reader takes the place of Ariel.
When the Ocean Calls by MusicalKehleigh
#8
When the Ocean Callsby 𝒦𝑒𝒽𝓁𝑒𝒾𝑔𝒽
The ocean can be gentle, lulling one into a false sense of security. But the waters are never calm in the Bermuda triangle, and when the waves pick up, one may be dragge...
Completed
Octavinelle x Reader One Shots (Twisted Wonderland)  by -Mono11037-
#9
Octavinelle x Reader One Shots (Tw...by -Mono11037-
Disney and its power over video games. First Epic Mickey, then Kingdom Hearts, and now this- oh well! As stated above, this consists of Octavinelle oneshots. I, of cou...
A Mermaid's Fate by billwithesifi
#10
A Mermaid's Fateby billwithesifi
Serena, a mermaid princess, turns 20 and receives a vision of her soulmate who turns out to be a human man. With only one year to find him before her heart stops beating...
🎵Harmony🎵(Melody's Twin) by WinterBella_Frost
#11
🎵Harmony🎵(Melody's Twin)by WinterBella_Frost
So you all know the story of little Melody, daughter of the famous Princess Ariel and Prince Eric. But what would happen if she had a sister? Who was born with a mermaid...
Completed
Serene Of The Sea by JensHobby
#12
Serene Of The Seaby Jenna Cook
[COMPLETED] When a mysterious stranger turns up in the small town of Mullion, Serena is desperate not to make an impression. She has enough things to worry about with a...
Completed
Fae In The Fire, lily evans ✓ by chessurK
#13
Fae In The Fire, lily evans ✓by chessurk
Faeries were rare creatures and one rarely saw a Faery unless they wanted to be see. Faeries have usually been seen as proud and arrogant, and overall terrible beings. B...
Completed
Mermaid Savior by Im_Blue_dabadedabadi
#14
Mermaid Saviorby **Super_Blue**
What happens when a mermaid saves THE Tony Stark? First story on here, so I hope it's good. It is only a short story so... Also, I'm on Quotev and FanFiction as Twisted_...
Ursula's Beginning by RachelShubert
#15
Ursula's Beginningby RachelShubert
2018 Wattys winner and Belle Ame Award winner in the Fan Fiction category. Reached #1 in thelittlemermaid, backstory, and Ursula; #3 in headcanons; #7 in Disney. [To be...
Completed
Disney Rescuers: Ariel on The Run by CatValentine1203
#16
Disney Rescuers: Ariel on The Runby Cat Valentine
Ariel gets kidnapped in Nickelodeon Studios, and it's up to her boyfriend, Barley Lightfoot, and best friends Ian Lightfoot and Isabela Madrigal to save her from the clu...
As Deep As The Ocean || •Mermaid AU• || KiriBaku by AlloAromantic
#17
As Deep As The Ocean || •Mermaid A...by AlloAromantic
"What the actual fuck are you?" "What do you mean, what am I? Im a shark! Isn't it obvious?" the red-head said, grinning and holding his hand out for...
The Tides of Fate || Yizhan Fanfic || Mermen AU by Script-Symphony
#18
The Tides of Fate || Yizhan Fanfic...by Diana Matthew
Xiao Zhan's illicit trips to the surface world have always been a thrilling escape, but his latest venture is his last. Captured by humans who will stop at nothing to ex...
Mermaid Shifting Guide by Isla_Mer
#19
Mermaid Shifting Guideby ♡Isla
Want To Dive Into A World Of Magic And Danger? To Swim Into The Deepest Trenches Without Running Out Of Oxygen? To Be Able To Control Water? Read This. Follow Every Word...
Fins and Feet [DISCONTINUED] by nocreativejuices
#20
Fins and Feet [DISCONTINUED]by Sydney
[][Kiribaku][] ( I hate to do this but I must, I am discontinuing the story. I just haven't been on here in a long time and I feel bad for not meeting peoples demands...