H2O: Just Add Water Crossovers
289 | Page 1 2 3 4 11 .. Last Next »

H2amilton by Thomassjefferson
Enjoy, bitches.
Crossover - H2O: Just Add Water & Hamilton - Rated: T - English - Romance/Western - Chapters: 1 - Words: 896 - Published: 12h - A. Hamilton, G. Washington
Dino Thunder: The Ocean's Roar (The Rewrite Edition) by Aquaprincess3 reviews
After being forced to move to Reefside by her aunt, Kaitlyn along with three other students are thrown into the dangerous life of being the Earth's newest protectors. But being the Silver Dino Thunder Ranger isn't the only secret Kaitlyn's forced to keep hidden. Can she trust her new teammates with this secret? Or will it tear them apart and help lead Mesogog to victory?
Crossover - Power Rangers & H2O: Just Add Water - Rated: T - English - Fantasy/Romance - Chapters: 18 - Words: 72,544 - Reviews: 29 - Favs: 26 - Follows: 23 - Updated: 7/23 - Published: 12/21/2015
Learning To Trust For The First Time Ever by BreeOUAT
Sam's never had a good foster home- she became mute when she was just 3 years old due to child abuse. When Sam and Abby's foster father hurts Sam, Abby decides she has had enough. She takes Sam, her identical twin daughters and son. they go to a quaint little town. Set during and after Season 1 of Once Upon a Time, Charmed and H20. Cleo is a major character- Roland and Regina to
Crossover - H2O: Just Add Water & Once Upon a Time - Rated: K+ - English - Sci-Fi/Hurt/Comfort - Chapters: 6 - Words: 10,160 - Favs: 1 - Published: 7/19
Mermaid in Manhattan by Catdragon513 reviews
Moving to New York wasn't exactly the worst thing to happen to mermaid Jacqueline Thompson. She was prepared to be content with her new life, that was until some twist of fate exposed her secret to some of the most dangerous people in the world, the Avengers. Now she has to deal with a new school, a new city, and a new life. (sporadic updates)
Crossover - H2O: Just Add Water & Avengers - Rated: T - English - Fantasy/Adventure - Chapters: 28 - Words: 48,342 - Reviews: 84 - Favs: 96 - Follows: 119 - Updated: 7/17 - Published: 8/16/2013 - Cleo S., Captain America/Steve R., Iron Man/Tony S., Nick F.
Merman or Werewolf by XxMadxXxHatterxX reviews
My OC Alex is a full mermaid who lives in the sea with her people with her one true friend Tate. She decides to live with her mundane mother for a while though. She ends up going to Forks and everything is just utter chaos. Rated T just in case.
Crossover - Twilight & H2O: Just Add Water - Rated: T - English - Romance/Drama - Chapters: 9 - Words: 9,890 - Reviews: 25 - Favs: 13 - Follows: 13 - Updated: 7/13 - Published: 12/7/2014
Float by Spiziri reviews
The end of the summer is rapidly approaching for our heroes, but Sally has one last adventure for Percy and Annabeth in Australia.
Crossover - Percy Jackson and the Olympians & H2O: Just Add Water - Rated: K+ - English - Fantasy/Humor - Chapters: 13 - Words: 38,256 - Reviews: 88 - Favs: 72 - Follows: 150 - Updated: 7/12 - Published: 5/13/2015
Sabrina the Teenage Witch: Meets The H20 mermaids by kyubi2020
Set after Graduation and soul mates. After marriage Sabina and Harvey moved back into the aunts' old Victorian house with Sabina staring her new teaching job at her old high school, with Harvey starting his job at the office, but life is about to change as the arrival of Cleo, Rikki and Bella soon beings events to an head, which could affect both the mortal and magic realms.
Crossover - Sabrina the Teenage Witch & H2O: Just Add Water - Rated: T - English - Adventure/Romance - Chapters: 1 - Words: 5,826 - Favs: 1 - Follows: 1 - Published: 7/10 - OC - Complete
Welcome to Mystic Falls by Enchanted99 reviews
Due to her parents business trip Emma is force to stay with her cousins Elena and Jeremy in Mystic Falls. You would think that a mermaid would not be shock to that find vampires, witches, and werewolves also exists. *edited version, originally publish 2013*
Crossover - H2O: Just Add Water & Vampire Diaries - Rated: T - English - Chapters: 6 - Words: 5,669 - Reviews: 8 - Favs: 15 - Follows: 18 - Updated: 7/8 - Published: 6/2/2015
Just Add Magic by WriteraAddicted
When a giant meteorite who was supposed to crash into the earth is mysteriously repelled by a pillar of water, the Wizarding World has to work non stop to keep the status of secrecy. But when they learn of the magical nexus that is Mako Island, of its rare and powerful Moon Rocks and of the new type of human-mermaid hybrids, greed, corruption and contempt is all the trio get.
Crossover - Harry Potter & H2O: Just Add Water - Rated: T - English - Fantasy/Family - Chapters: 3 - Words: 7,237 - Favs: 5 - Follows: 5 - Updated: 7/2 - Published: 5/27 - Blaise Z., Emma G., Charlotte W., OC
merman of H2o by foxwolf101 reviews
harry found out he have more family out their that want to take him harry is part merman when he turn 16 was james a merman or just in his family blood for decades find out when his cousin Cleo found out about...
Crossover - Harry Potter & H2O: Just Add Water - Rated: T - English - Adventure/Supernatural - Chapters: 2 - Words: 866 - Reviews: 2 - Favs: 5 - Follows: 12 - Updated: 6/28 - Published: 4/14
Piper's Tail by CHBNewRomeHogwartsBerk reviews
What if Piper had a tail during the Seven's Quest? What happens if the rest of the Seven find out? First Fanfic, please read and review! Takes place during The Mark Of Athena.
Crossover - Percy Jackson and the Olympians & H2O: Just Add Water - Rated: K - English - Chapters: 17 - Words: 22,488 - Reviews: 76 - Favs: 21 - Follows: 35 - Updated: 6/25 - Published: 2/19/2015
CSI Miami: That Deep Blue Secret by Luutje22 reviews
Serena is a new member of the CSI team. She has a secret that hasn't been accepted in the world yet as reality. Also, the one thing that you better not do is falling for your boss. And that is exactly what Serena does. Will Horatio only have a professional relationship with Serena, or will he feel the same way.
Crossover - CSI: Miami & H2O: Just Add Water - Rated: K - English - Crime/Romance - Chapters: 8 - Words: 9,291 - Reviews: 4 - Updated: 6/15 - Published: 6/2
A Decade Then and A Decade Now by Izi Wilson
10 years ago, we all went swimming in the magical Mako Island Moon Pool and our lives changed forever
Crossover - H2O: Just Add Water & Mako Mermaids - Rated: K+ - English - Friendship/Fantasy - Chapters: 1 - Words: 145 - Favs: 1 - Follows: 1 - Published: 6/7
House of Mermaids by Emily625 reviews
When Nina's cousin Cleo comes to school at Anubis house, things will get out of hand and secrets will be revealed, romances will be unleashed. But will a certain red headed enemy join the school too?
Crossover - H2O: Just Add Water & Het Huis Anubis/House of Anubis - Rated: T - English - Drama/Romance - Chapters: 7 - Words: 5,182 - Reviews: 7 - Favs: 11 - Follows: 15 - Updated: 5/30 - Published: 10/16/2014 - [Cleo S., Jerome C.] Charlotte W., Nina M.
First a Mermaid, Now a Slayer by MiLady TARDIS reviews
Charlotte wasn't meant to be a mermaid, but she was born to be a Slayer.
Crossover - Buffy: The Vampire Slayer & H2O: Just Add Water - Rated: K - English - Supernatural/Friendship - Chapters: 26 - Words: 23,749 - Reviews: 44 - Favs: 13 - Follows: 26 - Updated: 5/26 - Published: 10/29/2012 - Willow R., Charlotte W. - Complete
H2O: Just add Winter by legend fanatic reviews
Lewis has another person he loves, mabey even more then Cleo? Will Cleo be jealouse? Sawyer and Hazel come to Australia because Clear Water has been attacked, but just how far will this new girls ties go with their new friends and their old ones? Cleo/Lewis Bella/Will Emma/Ash Rikki/Zane (eventually) Hazel/Sawyer Jenna/Carson (My charicters)
Crossover - H2O: Just Add Water & Dolphin Tale - Rated: K - English - Romance/Tragedy - Chapters: 9 - Words: 2,855 - Reviews: 9 - Favs: 3 - Follows: 4 - Updated: 5/10 - Published: 1/23/2015 - Emma G., Charlotte W., Louise C., Sawyer N.
Cerulean by Lunas13 reviews
The story follows a girl named Rori; a seemingly normal girl. But ever since an incident that occurred when she was fourteen her life has never been the same. One night the Moon proves to have a stronger call than ever before and when she comes to her senses she is in a strange land. Can she get home? Will she even want to when she discovers what she could have there? Elladan X OC
Crossover - Lord of the Rings & H2O: Just Add Water - Rated: T - English - Humor/Romance - Chapters: 5 - Words: 23,685 - Reviews: 28 - Favs: 30 - Follows: 40 - Updated: 5/9 - Published: 1/24/2015
Brides a Mermaid: The After Story Ft Excalibur from Soul Eater by Emmy Bella
You know that story how you meet a guy, love him, then get married and live happily ever after. This isn't like one of those stories, this is like one of those stories that most people hate because it breaks the 4th wall too many times (oh well). This is about a mermaid who meets a man, gets married, then things go wrong. Nagasumi becomes a merman? All because of Ren, Suns mom!
Crossover - Seto no Hanayome & H2O: Just Add Water - Rated: T - English - Adventure/Romance - Chapters: 1 - Words: 245 - Favs: 1 - Published: 4/30 - [Sun S., Nagasumi M.]
A Mermaid In Forks by NikkiM95 reviews
When Bella decided to move to Forks, she didn't take into account that it's the wettest place in the US. And to make things worse, in enters Edward, the unbelivably handsome guy who saves her life. But can she figure out his secret before he figures out hers while she develops feelings for the golden eyed mystery guy. Can they overcome obstacles and find Love?
Crossover - Twilight & H2O: Just Add Water - Rated: T - English - Romance/Supernatural - Chapters: 12 - Words: 48,478 - Reviews: 142 - Favs: 205 - Follows: 237 - Updated: 4/24 - Published: 9/24/2012 - Bella, Edward
Hermione Meets H2O by Lynelle147 reviews
Set three months after Voldemort is defeated, Hermione goes on a special mission to find a new species in Australia. You'd be surprised what she finds...
Crossover - Harry Potter & H2O: Just Add Water - Rated: T - English - Friendship/Fantasy - Chapters: 20 - Words: 36,735 - Reviews: 137 - Favs: 75 - Follows: 123 - Updated: 4/18 - Published: 6/11/2012 - Hermione G., Cleo S.
Merpires by sibuna4everfabina reviews
After Edward left Bella she met Emma Cleo said Rikki and become Merpires what happens when they go to Forks and see the Cullens. Better then it sounds.
Crossover - Twilight & H2O: Just Add Water - Rated: K+ - English - Romance/Drama - Chapters: 21 - Words: 6,461 - Reviews: 22 - Favs: 60 - Follows: 57 - Updated: 4/15 - Published: 3/10/2014 - Bella, Cleo S., Emma G.
Sisters by WolfRune20855 reviews
"Rita Santos considered herself to be a very patient person. She could put up with a lot of different kinds of shenanigans and trouble making, after all, she was a principal. However, there came a time when Rita Santos's patience wore thin, and right now was one of those times." One shot featuring Rita and the Sertori sisters.
Crossover - H2O: Just Add Water & Mako Mermaids - Rated: K - English - Chapters: 1 - Words: 812 - Reviews: 6 - Favs: 14 - Follows: 8 - Published: 4/15 - Cleo S., Kim S., Rita S. - Complete
H20: Just add zombies by StydiaYes reviews
The apocalypse in another eyes. Cleo and the gang already have a crazy life, what if we added zombies?
Crossover - H2O: Just Add Water & Walking Dead - Rated: T - English - Drama/Fantasy - Chapters: 10 - Words: 3,650 - Reviews: 17 - Favs: 10 - Follows: 10 - Updated: 4/5 - Published: 4/11/2014 - Rikki C., Cleo S., Bella H., Carl G.
New Tail In Town by mermaidbyheart reviews
After Ondina's goodbye Erik does the only thing he knows how to do best, leave. He goes to Sydney where new adventures await him. There he meets a girl who not only resembles Ondina, but shares the mer secret as well. Then he suffers an accident that is about to change his whole life. For better or worse, only time would tell.
Crossover - H2O: Just Add Water & Mako Mermaids - Rated: K+ - English - Adventure/Romance - Chapters: 3 - Words: 3,388 - Reviews: 11 - Favs: 13 - Follows: 19 - Updated: 4/3 - Published: 6/18/2015 - [Erik, Rikki C.]
A Mermaids Tear by Mermaid's Magic reviews
What if Cleo was not the birth daughter of Don and Bev Sertori? What if Kim and Cleo didn't really hate each other? What if Emma and Rikki didn't like Cleo? What if Lewis was two timing her with Charlotte? Who will be Cleo's new love? Why am I asking you these questions when I wont answer them? That is because you will just have to read to find the answers out for yourselves! G.L.
Crossover - Jurassic Park & H2O: Just Add Water - Rated: T - English - Fantasy/Romance - Chapters: 2 - Words: 2,673 - Reviews: 3 - Favs: 8 - Follows: 9 - Updated: 3/29 - Published: 3/23 - [Owen, Cleo S.] [Zach M., Kim S.]
289 | Page 1 2 3 4 11 .. Last Next »