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

A new kind of mutant by Puolalainen25 reviews
The story takes place during X-Men: First Class, when McCoy and Xavier use a prototype Cerebro to locate mutants. They were told by a guy in a bar to go away in not quite polite way a few days ago but Charles has just found a track of new mutant.
Crossover - X-Men: The Movie & H2O: Just Add Water - Rated: T - English - Supernatural/Drama - Chapters: 8 - Words: 12,551 - Reviews: 4 - Favs: 5 - Follows: 9 - Updated: 5/8 - Published: 7/20/2017 - Erik L./Magneto, Charles Xavier/Professor X, Sebastian S.
Deep Red by Sellybelly411 reviews
Emma has returned to Australia! Cleo, Rikki, and Bella are overjoyed to have her back. Lyla, Nixie, and Sirina are having trouble re-gaining Zac's trust. Meanwhile there's some trouble brewing in the sky. A blood moon. It can turn our four into permanant mermaids forever. Can Lyla and the others figure out what they are before it's to late?
Crossover - H2O: Just Add Water & Mako Mermaids - Rated: K+ - English - Fantasy/Adventure - Chapters: 9 - Words: 5,110 - Reviews: 27 - Favs: 27 - Follows: 29 - Updated: 4/16 - Published: 1/9/2015
Secrets are made to be found out by QueenCorra reviews
- IN REWRITE - Aleeya gets to live the life girls only could dream about. shes a mermaid and so are her friends emma, cleo, and rikki. but when her mum gets called back into the CIA shes sent to her brother sams where she gets mixed up with werewolves, vampires and the volturi
Crossover - Twilight & H2O: Just Add Water - Rated: T - English - Supernatural - Chapters: 9 - Words: 15,484 - Reviews: 41 - Favs: 83 - Follows: 116 - Updated: 4/1 - Published: 8/18/2012
No Ordinary Girls by aFlOwErBlOoMiNgInAdVeRsItY reviews
While Rachel is excited that C.L.A offers her the chance to go to Australia, after the titan war she has been jumpy and on edge. She also has to keep her prophecies and clear sight a secret from her 'normal' host family, the Gilberts. Last year, Emma would have been looking forward to having an American exchange student but now it just means another person to hide her secret from.
Crossover - Percy Jackson and the Olympians & H2O: Just Add Water - Rated: K+ - English - Friendship/Fantasy - Chapters: 4 - Words: 2,817 - Reviews: 12 - Favs: 11 - Follows: 28 - Updated: 3/22 - Published: 3/17/2017 - Rachel D., Emma G.
Other Fish in the Ocean by Cray Queen of Angst reviews
What happens when Zac goes out for a swim around Mako, and ends up getting lost. It's up to Cam, Nixie, Serena and Lyla to find him. But, what's this? Zac's met OTHER mermaids? Better than it looks I promise! Adopted Story, Set after the end of both series, T for safety. Sequel Up!
Crossover - H2O: Just Add Water & Mako Mermaids - Rated: T - English - Friendship/Adventure - Chapters: 6 - Words: 7,760 - Reviews: 71 - Favs: 60 - Follows: 65 - Updated: 3/18 - Published: 9/21/2013 - Emma G., Zac B. - Complete
More Fish Out At Sea by Cray Queen of Angst reviews
Seq. to OFitO, can be read on its own. More drama awaits our mermaids as their relationships are tested once again as secrets weigh them down. As Blast from the past returns to their life to put an end to their whatever calm they had managed to find. DISCLAIMER: I Don't Own Mako Mermaids, or H2O: Just Add Water
Crossover - H2O: Just Add Water & Mako Mermaids - Rated: T - English - Friendship/Drama - Chapters: 2 - Words: 4,900 - Reviews: 14 - Favs: 18 - Follows: 22 - Updated: 3/16 - Published: 10/20/2014 - Rikki C., Zane B., Lyla, Zac B.
It isn't easy being on the run by Charlie Cecilia reviews
In this AU, Ted is hiding a big secret: Ted is a merman on the run from Linda Denman. Ted is also trying to deal with his hidden feelings for Barney, and the toll being on the run is having on him. I have also posted this on Wattpad: /story/139281338-it-isn%27t-easy-being-on-the-run-ted-x-barney and Archive of our Own: /works/10785
Crossover - How I Met Your Mother & H2O: Just Add Water - Rated: K - English - Angst/Romance - Chapters: 3 - Words: 4,840 - Reviews: 2 - Favs: 1 - Follows: 2 - Updated: 2/18 - Published: 7/28/2017
Zeo Mermaid Ranger by CyberChick135 reviews
A new chapter of Emma Gilbert's life as Zeo Ranger I Pink. How she tries to keep her life balanced with being a working high-school Senior, keeping her mermaid secret from her high-school peers, and being a Power Ranger tasked with protecting Angel Grove. And to top it all off, realizing she has deeper feelings for her best friend/Ranger team leader, Tommy Oliver.
Crossover - Power Rangers & H2O: Just Add Water - Rated: T - English - Friendship/Romance - Chapters: 3 - Words: 11,143 - Reviews: 17 - Favs: 20 - Follows: 19 - Updated: 2/12 - Published: 11/20/2017 - [Tommy O., Emma G.] Billy C., Elliot G.
Dino Thunder: The Ocean's Roar by Aquaprincess3 reviews
When Kaitlyn moves to Reefside to finish her senior year, she, and three fellow students discover powerful gems and become the Dino Thunder Power Rangers. But being a Power Ranger isn't the only secret Kaitlyn's kept hidden.
Crossover - Power Rangers & H2O: Just Add Water - Rated: T - English - Fantasy/Romance - Chapters: 26 - Words: 103,120 - Reviews: 52 - Favs: 64 - Follows: 55 - Updated: 1/26 - Published: 12/21/2015 - Conner M., Trent F., Nick, OC
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: 7 - Words: 33,219 - Reviews: 50 - Favs: 53 - Follows: 72 - Updated: 12/27/2017 - Published: 1/24/2015
Merman or Werewolf by XxMadxXxHatterxX reviews
Ginevieve Marie Hadlee is a human who has been granted the ability to live as a mermaid, but a threat arises promising to cleanse the ocean of all non-pure merpeople. Given the task to live on land and protect her people, Gin falls in love and makes mistakes that might cost her, her life. (I am rewriting this because my writing is awful but has improved since I last wrote this) R&R
Crossover - Twilight & H2O: Just Add Water - Rated: T - English - Romance/Drama - Chapters: 7 - Words: 5,705 - Reviews: 26 - Favs: 23 - Follows: 27 - Updated: 12/17/2017 - Published: 12/7/2014
One Moon Cycle by TasiMom reviews
I had this idea floating around about how both shows are connected with a back story. The premise is that Rita lied when she said Harry died. Harry is Harrison Bennett. I hope you enjoy it. The story takes place shortly after the last season of Mako. Not all relationships are going to be the same. So, if you don't want changes, then this might not be the story for you.
Crossover - H2O: Just Add Water & Mako Mermaids - Rated: T - English - Fantasy/Drama - Chapters: 14 - Words: 17,086 - Reviews: 33 - Favs: 20 - Follows: 29 - Updated: 11/14/2017 - Published: 2/14/2017 - Harrison B., Rita S.
No Ordinary Ranger by CyberChick135 reviews
Billy's cousin, Emma Gilbert, moves from Australia to Angel Grove. Adjusting to her new home is hard, especially when her cousin and his friends are hiding something. However, Emma herself is keeping a secret from Billy, as well as her new friends. When witnessing the Rangers in action, secrets are revealed and a new Pink Ranger comes into the fold.
Crossover - Power Rangers & H2O: Just Add Water - Rated: T - English - Friendship/Romance - Chapters: 20 - Words: 62,674 - Reviews: 46 - Favs: 36 - Follows: 30 - Updated: 10/26/2017 - Published: 4/29/2017 - Billy C., Tommy O., Emma G. - Complete
Beauties and beasts by Startraveler93 reviews
An accident releases a group of inhabitants from the Amazon in the waters Mako island and Gold Coast. What happens when Cleo, Emma, Bella and Rikki find themselves facing adversaries who are marveled by their beauty, how far will theses visitors go to get them to be with them?
Crossover - H2O: Just Add Water & Creature from the Black Lagoon - Rated: T - English - Romance/Friendship - Chapters: 4 - Words: 10,624 - Reviews: 6 - Favs: 11 - Follows: 14 - Updated: 10/12/2017 - Published: 12/4/2016 - Rikki C., Cleo S., Emma G., Bella H.
Crossing Realms by Mourning Dahl reviews
Charlotte Watsford avoided losing her tail and powers the night of the fifty year full moon. After swimming away, she finds herself in the small town of Storybrooke, Maine.
Crossover - H2O: Just Add Water & Once Upon a Time - Rated: K+ - English - Drama/Fantasy - Chapters: 10 - Words: 6,845 - Reviews: 4 - Favs: 6 - Follows: 11 - Updated: 10/4/2017 - Published: 2/21/2017
Under the Sea by rosesnblueberries reviews
Cleo and Lewis have been travelling all over the world in search of other magical beings like herself, but to no avail. But, once they visit New Orleans where there is a reputation of the supernatural, will they run into the thousand year-old vampire family? What will be said about the uncanny similarities between Hayley and Cleo?
Crossover - H2O: Just Add Water & Originals - Rated: K+ - English - Romance/Supernatural - Chapters: 5 - Words: 3,089 - Reviews: 31 - Favs: 46 - Follows: 59 - Updated: 9/24/2017 - Published: 2/7/2016
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: T - English - Fantasy/Humor - Chapters: 21 - Words: 85,564 - Reviews: 292 - Favs: 233 - Follows: 358 - Updated: 8/16/2017 - Published: 5/13/2015
H2O Meets Anubis by NINAXFABIAN reviews
When Nina and her friends go to Australia for the summer to see her cousin, Cleo. Will Nina become a mermaid trying to find Cleo's sectret? Will Rufus kidnap Cleo trying to find Nina's secret? MOSTLY FABINA, CLEWIS , AND EVERY OTHER COUPLE
Crossover - H2O: Just Add Water & Het Huis Anubis/House of Anubis - Rated: K+ - English - Romance/Mystery - Chapters: 10 - Words: 7,558 - Reviews: 83 - Favs: 57 - Follows: 54 - Updated: 8/8/2017 - Published: 6/1/2011 - Cleo S., Nina M.
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: 22 - Words: 6,596 - Reviews: 29 - Favs: 71 - Follows: 74 - Updated: 7/24/2017 - Published: 3/10/2014 - Bella, Cleo S., Emma G.
New Beginnings A Mermaid's Tale by Turtlewarrioroflegend reviews
Initially set before her time in H2O, Bella goes to Angel Grove to visit her cousin. Little does she know the trouble that follows them, and she has trouble of her own that must be dealt with. Secrets are revealed and friendships are forged that will impact the future. Please R/R.
Crossover - Power Rangers & H2O: Just Add Water - Rated: T - English - Adventure/Family - Chapters: 2 - Words: 8,739 - Reviews: 4 - Favs: 5 - Follows: 7 - Updated: 7/1/2017 - Published: 6/16/2017 - [Kat H., Tommy O.] Bella H.
TVD or H2O? by batsuey reviews
Cleo and Emma find themselves in an alternate reality as a werewolf and an Original vampire respectively. They will need the help of Elena and everyone to get home. Some of the people though such as Caroline and Tyler have axes to grind with the mermaids' doppelganger counterparts. Will the mermaids ever find a way home to their own reality?
Crossover - H2O: Just Add Water & Vampire Diaries - Rated: T - English - Romance/Fantasy - Chapters: 3 - Words: 2,499 - Reviews: 3 - Favs: 7 - Follows: 7 - Updated: 5/31/2017 - Published: 11/11/2016 - Cleo S., Emma G., Elena G., Stefan S.
Mermaid meet vampires, Vampires meet mermaid by DarkeningBlur.HLR reviews
Bella was turned into a mermaid at the age of Nine and has been one ever since, what happens when she moves to Forks? The wettest place on earth. Will she be able to keep the secret? What happens when the Cullens are curious? -I don t own any or this
Crossover - Twilight & H2O: Just Add Water - Rated: K - English - Mystery/Fantasy - Chapters: 9 - Words: 7,607 - Reviews: 45 - Favs: 113 - Follows: 124 - Updated: 5/29/2017 - Published: 1/1/2014 - Bella, Edward
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: 38 - Words: 68,193 - Reviews: 101 - Favs: 122 - Follows: 143 - Updated: 5/2/2017 - Published: 8/16/2013 - Cleo S., Captain America/Steve R., Iron Man/Tony S., Nick F.
Power Rangers Dino Thunder: Might of a Dragon by Chris Rudy reviews
Six students become chosen to be the new team of Power Rangers. What happens when half of these new Rangers are discovered to be hiding something from their teammates? Find out in this story.
Crossover - Power Rangers & H2O: Just Add Water - Rated: T - English - Chapters: 3 - Words: 12,500 - Reviews: 2 - Favs: 5 - Follows: 8 - Updated: 4/10/2017 - Published: 2/16/2017
Half The Water by PLP20005 reviews
What if Piper Mclean had a secret during the seven's quest? What if her secret was that she was a mermaid? She hasn't told anyone about this secret. When she is attacked, she is forced to reveal her tail. Will she be forgiven? PJ and H2O crossover.
Crossover - Percy Jackson and the Olympians & H2O: Just Add Water - Rated: K+ - English - Adventure/Romance - Chapters: 7 - Words: 13,226 - Reviews: 2 - Favs: 4 - Follows: 7 - Updated: 4/9/2017 - Published: 3/4/2017
294 | Page 1 2 3 4 11 .. Last Next »