H2O: Just Add Water Crossovers
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Dino Thunder: The Ocean's Roar by Aquaprincess3 reviews
When Kaitlyn is forced to live with her cousin in Reefside, she and four other student's are thrown into the life of being the earth's newest protector's. But being the Silver Dino Ranger isn't the only secret Kaitlyn has to hide from the world. Can she trust her new friends and teammates with this secret? Or will it break them up? [Connor&Kaitlyn], [Kira&Trent], [Ethan&Demi]
Crossover - Power Rangers & H2O: Just Add Water - Rated: T - English - Fantasy/Drama - Chapters: 7 - Words: 28,728 - Reviews: 8 - Favs: 6 - Follows: 8 - Updated: 16h ago - Published: 11/16/2014 - [Conner M., OC] [Kira F., Trent F.]
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: 4 - Words: 2,774 - Reviews: 1 - Follows: 2 - Updated: 2/28 - Published: 2/19
Mermaids and demigods? by Diamondsgirl reviews
Basically just the demigods meet the mermaids. No Flames! It's my first fanfic. T cos' I'm paranoid :D
Crossover - Percy Jackson and the Olympians & H2O: Just Add Water - Rated: T - English - Chapters: 3 - Words: 2,047 - Reviews: 3 - Follows: 3 - Updated: 2/27 - Published: 2/25 - [Annabeth C., Percy J.] Cleo S., Bella H.
H20 Mako water part 3 by kyubi2020
Set a month after H20 Mako water part 2. Two new mermaids arrive in order to take away Zac's powers, but when old meets new will it be as simple as it seems. Enspecial when new arrvails finds out that mermaids are not only things in addition to Zac. While a new boy arrives intend on seizing Mako Island for himself.
Crossover - H2O: Just Add Water & Mako Mermaids - Rated: T - English - Adventure/Romance - Chapters: 12 - Words: 15,360 - Favs: 1 - Follows: 1 - Updated: 2/26 - Published: 2/14 - OC - Complete
A Timeline of Mako Island by fictionlover94
A timeline of mako mermaids and h2o events that line the series. Includes spoilers for season 2 and season 3 of Mako Mermaids. Enjoy and review!
Crossover - H2O: Just Add Water & Mako Mermaids - Rated: K - English - Chapters: 1 - Words: 680 - Favs: 2 - Published: 2/24 - Complete
Just Add Smallville by Slybrat reviews
Clark and Kara are both in High School in this story. When Clark's family leaves Smallville and moves to Australia he is reunited with his cousin Cleo and he meets her beautiful friend Emma and sparks instantly fly. See how they become closer when someone very special comes into their life. Will their love survive when everyone's life's are put at risk?
Crossover - Smallville & H2O: Just Add Water - Rated: T - English - Romance/Drama - Chapters: 38 - Words: 29,645 - Reviews: 51 - Favs: 12 - Follows: 13 - Updated: 2/24 - Published: 9/25/2012 - Clark K./Superman, Emma G.
Swimming in twilight by Nessie090603
What if the girls from H20 bump into Edward and find out his and the cullens secret?
Crossover - Twilight & H2O: Just Add Water - Rated: T - English - Romance/Fantasy - Chapters: 1 - Words: 105 - Favs: 1 - Follows: 2 - Published: 2/24
No Coward Soul by Bathyal reviews
A year later, the three girls who had gotten lost at sea for a whole day the summer before year ten were about to enter year twelve. One of them had won gold in States in competitive swimming, one of them had taken up martial arts, and one formed a small tutoring business with her best friend and his girlfriend. Everything was normal.
Crossover - H2O: Just Add Water & Mako Mermaids - Rated: T - English - Drama/Fantasy - Chapters: 8 - Words: 14,701 - Reviews: 1 - Favs: 1 - Follows: 3 - Updated: 2/23 - Published: 1/3 - Rikki C., Will B., Cam, Evie
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: 18 - Words: 14,776 - Reviews: 32 - Favs: 9 - Follows: 19 - Updated: 2/23 - Published: 10/29/2012 - Willow R., Charlotte W.
The Dark Side of the Moon H2O&MM Xover by mermaidbyheart reviews
Zac and the girls are somehow thrown into the H2O world. Trying to figure out a way back home, they have to cope with many complications. They'll face a lot of difficulties, including being affected by the crystal necklaces. The H2O gang will also face new challanges like the stone of the trident and many more. What will be the reaction of the two gangs when they finally meet?
Crossover - H2O: Just Add Water & Mako Mermaids - Rated: K+ - English - Adventure/Mystery - Chapters: 7 - Words: 12,509 - Reviews: 31 - Favs: 31 - Follows: 42 - Updated: 2/20 - Published: 2/17/2014 - Rikki C., Cleo S., Lyla, Zac B.
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: 3 - Words: 1,188 - Reviews: 1 - Favs: 2 - Follows: 2 - Updated: 2/15 - Published: 1/23 - Emma G., Charlotte W., Louise C., Sawyer N.
The Fairy Chronicles Book 1 Mermaid and Fairy Magic by Max Nightshade reviews
A girl named Zoey finds a moon pool and turns into a mermaid and fairy. P.S. Has a little Fairy Tail and Sword Art Online. Disclaimer: I do not own H2o, Winx Club, Fairy Tail, or Sword Art Online
Crossover - Winx Club & H2O: Just Add Water - Rated: K+ - English - Adventure/Romance - Chapters: 4 - Words: 1,476 - Reviews: 2 - Favs: 1 - Follows: 1 - Updated: 2/14 - Published: 11/18/2014
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: 7 - Words: 3,312 - Reviews: 19 - Favs: 5 - Follows: 4 - Updated: 2/14 - Published: 1/9
H2o just add Avatar by Max Nightshade reviews
Disclaimer: I do not own Avatar the Last Airbender or H2o just add water Katara goes to Austrailia for the summer and gets turned into a mermaid how is she going to hide her tail when she is a water bender
Crossover - Avatar: Last Airbender & H2O: Just Add Water - Rated: K+ - English - Adventure/Drama - Chapters: 2 - Words: 570 - Reviews: 2 - Favs: 1 - Follows: 3 - Updated: 2/12 - Published: 11/29/2014 - Gaang, Rikki C., Cleo S., Emma G.
el principe del mar se convierte en mitad pez by Rete2212 reviews
El titulo lo dice cssi todo. Pero aca esta mas detallado percy va con su mama a visitar a su tia y a su nuevo esposo a australia. Cuando una noche decide ir a nadar a una isla donde entra a uns pequeña cueva en el fondo de un volcán
Crossover - Percy Jackson and the Olympians & H2O: Just Add Water - Rated: T - Spanish - Chapters: 3 - Words: 3,147 - Reviews: 3 - Favs: 6 - Follows: 6 - Updated: 2/5 - Published: 11/30/2014 - Percy J., Rikki C., Cleo S., Bella H.
AustraliANTs by H2O Mermaid Girl
What happens when Olive, Chyna, and Fletcher go spend the summer in Australia with Olive's cousin, Lewis? Starts at the H2O episode 'Irresistible' and continues from there. Will Cleo and Lewis finally realize their true feeling for each other? Or, will the ANTs find out their secret and team up with Kim and Elliot to expose them? Read to find out More. Better than it sounds.
Crossover - H2O: Just Add Water & A.N.T. Farm - Rated: T - English - Friendship/Drama - Chapters: 2 - Words: 577 - Published: 2/5 - Cleo S., Lewis M., Charlotte W., Olive D.
Phantom of the Coast by NatGeosonian44 reviews
Strange things have been happening to Cleo, Emma & Rikki, which is weird since they're mermaids. It's almost like they're being haunted. Back in Amity, something is pulling ghosts and halfas alike to the Gold Coast. To keep their jobs the Fenton's move too, following the ghosts but the soon learn it might not have been a good idea. Now Danny has more on his plate than just ghosts.
Crossover - Danny Phantom & H2O: Just Add Water - Rated: T - English - Adventure/Romance - Chapters: 1 - Words: 5,041 - Reviews: 1 - Favs: 8 - Follows: 8 - Published: 1/30 - [Danny F., Rikki C.] Emma G., Cleo S.
Mermaid to Mermaid by fictionlover94 reviews
She loved to reminisce the days she had just become a mermaid. Learning her powers for the first time. Avoiding the heavy rainy days when she lived in places like England, Seattle, and India. "I guessed you changed at Mako Island here in Australia?" "No actually I was born this way." Bella and Rita finally meet and learn they are mermaids on her first day. Oneshot.
Crossover - Mako Mermaids & H2O: Just Add Water - Rated: K+ - English - Chapters: 1 - Words: 1,258 - Reviews: 3 - Favs: 6 - Follows: 1 - Published: 1/27 - Bella H., Rita S. - Complete
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: 1 - Words: 5,258 - Reviews: 4 - Favs: 5 - Follows: 9 - Published: 1/24
Secrets are made to be found out by night-queen23 reviews
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: 8 - Words: 15,373 - Reviews: 32 - Favs: 54 - Follows: 82 - Updated: 1/12 - Published: 8/18/2012
Full Moon by summer-echo-11 reviews
Hayley Uley's life changed when she became a mermaid with Cleo, Rikki, & Emma. When she was able to cope with that change, another one occurred - moving to Forks. But along with that change comes werewolves & vampires, & the mermaids are dragged into their war.
Crossover - Twilight & H2O: Just Add Water - Rated: T - English - Romance/Drama - Chapters: 36 - Words: 86,002 - Reviews: 354 - Favs: 224 - Follows: 211 - Updated: 1/12 - Published: 6/25/2010 - Jacob, Sam
Scaly Tailed Mentor by ShadowCloud01 reviews
After an incident with a glowing jewel pendant, Harry finds himself in the H20 universe with some new powers. A year later, the moon has done it magic and left three new mermaids in the clear ocean of Australia. After Harry discovers the three new mermaids, he becomes a mentor to the three girls. With a powerful wizard/merman as their mentor, what could possibly go wrong? OOC Harry
Crossover - Harry Potter & H2O: Just Add Water - Rated: T - English - Chapters: 2 - Words: 3,791 - Reviews: 5 - Favs: 23 - Follows: 40 - Published: 1/11
total drama h2o the awakening by Black-Shadow-Beauty
Gwen and Courtney are the only two mermaids after Lindsay left and maybe a newbie mermaid is joining you will find out
Crossover - Total Drama series & H2O: Just Add Water - Rated: K - English - Drama - Chapters: 1 - Words: 240 - Published: 1/6 - Gwen, Courtney, OC
The Mermaid Avenger by Forever hero girl reviews
A mermaid, Alex Stark, the niece of Tony Stark, is living a normal life in NYC, well a normal life for a girl with mermaid powers. What happens when she gets mixed up in her Uncle's avenger business? So what's a girl to do when SHIELD is after the secrets of your tail and you dosn't want to give them up? Madness, powers, a few laughs maybe, little bit of language. CROSSOVER EPIC!
Crossover - Avengers & H2O: Just Add Water - Rated: T - English - Adventure/Fantasy - Chapters: 13 - Words: 50,584 - Reviews: 32 - Favs: 42 - Follows: 47 - Updated: 1/5 - Published: 8/3/2014
The Fighting Fish by Rkatp reviews
When Cameron Hayes, or Cammie, moves from sunny Australia to New York, a whole lot can happen. What happens when she is attacked on her first day of school and attracts SHIELD's attention? How is she gonna get out of this mess? Will she keep the secret, or will it be exposed for the government? Rated for Language.
Crossover - H2O: Just Add Water & Avengers - Rated: T - English - Chapters: 6 - Words: 12,868 - Reviews: 33 - Favs: 30 - Follows: 40 - Updated: 12/25/2014 - Published: 6/15/2013 - Elliot G., Iron Man/Tony S., Thor, Nick F.
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