H2O: Just Add Water Crossovers
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The Secret Life of Natasha Romanoff by Onetimewritter reviews
Natasha Romanoff, AKA Black Widow, is an Avenger. She can fight off a terrible school, aliens, and out of control robots, but can she handle the discovery of her biggest secret? She will bare the weight of this secret forever, but will it be easier once she meets other girls like her? (I do not own The Avengers or H2O: Just Add Water)
Crossover - H2O: Just Add Water & Avengers - Rated: T - English - Fantasy/Hurt/Comfort - Chapters: 5 - Words: 6,829 - Reviews: 1 - Favs: 1 - Follows: 2 - Updated: 7/2 - Published: 6/26 - Black Widow/Natasha R.
The Meredead by SocratesJackson
A crossover set in the H2O: Just Add Water universe, with the addition of characters from The Vampire Diaries. Bonnie and Caroline take Elena away on a vacation, to get away from all the supernatural happens back in Mystic Falls. But what they discover on The Gold Coast of Australia changes their lives and the lives of those they meet...
Crossover - H2O: Just Add Water & Vampire Diaries - Rated: T - English - Supernatural/Adventure - Chapters: 10 - Words: 13,245 - Favs: 1 - Follows: 2 - Updated: 7/2 - Published: 6/23 - Cleo S., Elena G., Bonnie B., Caroline F.
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: 6 - Words: 8,237 - Reviews: 14 - Favs: 16 - Follows: 27 - Updated: 7/1 - Published: 5/13
House of H2o by Sibunaalways
When five anubis house students visit Australia (they are visiting Mick) , they meet four girls ( Cleo, Rikki, Bella,and Emma)who seem to have a secret.
Crossover - Het Huis Anubis/House of Anubis & H2O: Just Add Water - Rated: K+ - English - Mystery/Adventure - Chapters: 1 - Words: 138 - Favs: 1 - Follows: 1 - Published: 6/25 - Bella H., Mara J., Alfie L., Joy M.
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?
Crossover - Power Rangers & H2O: Just Add Water - Rated: T - English - Fantasy/Drama - Chapters: 13 - Words: 48,956 - Reviews: 23 - Favs: 18 - Follows: 21 - Updated: 6/24 - Published: 11/16/2014 - Conner M., Ethan J.
I Just Want to Go Home by Rikkiemerson reviews
If the comet hit Mako and Acnologia hadn't attacked Tenrou. Some AU. Set at the end of season 3 for H2O and just before the end of the S-Class trial for Fairy Tail. Warning: Spoilers. Hope you like it!
Crossover - Fairy Tail & H2O: Just Add Water - Rated: K+ - English - Adventure/Friendship - Chapters: 3 - Words: 2,016 - Reviews: 9 - Favs: 3 - Follows: 10 - Updated: 6/23 - Published: 3/6
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: 10 - Words: 8,108 - Reviews: 26 - Favs: 5 - Follows: 16 - Updated: 6/19 - Published: 2/19
New Tail In Town by mermaidbyheart reviews
After Ondina breaks up with him Erik does what he can do best - leave. He goes off to Sydney where he meets new people and new adventures await him. Little does he know, the new girl he's going to fall head to feet for, is nothing else but..a mermaid.
Crossover - H2O: Just Add Water & Mako Mermaids - Rated: K+ - English - Adventure/Romance - Chapters: 1 - Words: 1,195 - Reviews: 3 - Favs: 6 - Follows: 6 - Published: 6/18 - [Erik, Rikki C.]
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: 4 - Words: 4,876 - Reviews: 5 - Favs: 6 - Follows: 6 - Updated: 6/16 - Published: 6/2
Book 3: The Girl With the Tail by PJO-Is-Amazing1234
When she was six years old, Kylie Canebridge and her friends fell into a pool in the middle of a volcano. Now, they face the challenge of more mermaids and a brand new merman who doesn't know how strong the pull of the full moon is. And what happens when Emma comes back home to find even more mermaids?
Crossover - H2O: Just Add Water & Mako Mermaids - Rated: K+ - English - Adventure/Humor - Chapters: 4 - Words: 3,847 - Follows: 1 - Updated: 6/15 - Published: 6/10 - Rikki C., Zac B., Cam, David - 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: 5 - Words: 2,146 - Reviews: 7 - Favs: 2 - Follows: 2 - Updated: 6/10 - Published: 1/23 - Emma G., Charlotte W., Louise C., Sawyer N.
h20: just add secrets by cabool
what if Cleo,Emma,and Rikki go and find Hayley and Rebekah and tall them they are their doppelgangers then make them mermaids. what will the gang going to say. (parings) {Klaus and Caroline} {hayley and Elijah} {Damon and Elena} {Stephen and Rebekah} {Bonnie and Kol}
Crossover - H2O: Just Add Water & Vampire Diaries - Rated: T - English - Supernatural/Romance - Chapters: 2 - Words: 257 - Favs: 2 - Follows: 3 - Published: 6/7 - Cleo S., Emma G., Rebekah, Hayley
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: 2 - Words: 8,752 - Reviews: 12 - Favs: 14 - Follows: 18 - Updated: 6/7 - Published: 1/24
Twin merman by bisimcat13
Zack and Cody are think that they are just on a vacation but what happens on the vacation is very suprising. How will they deal with this newfound secret. (I don't own the Suite life series or H2O Just Add Water just the storyline in the fanfiction) This is my first fanfic hope you like it! Rated T for language
Crossover - Suite Life series & H2O: Just Add Water - Rated: T - English - Family/Drama - Chapters: 3 - Words: 2,786 - Follows: 1 - Updated: 6/2 - Published: 5/31 - Cody M., Zack M., Carey M., Cleo S.
Crossing Tails by ObsessedwReading reviews
Shortly after Cleo, Emma, and Rikki are changed into mermaids they end up in another world (Mako Mermaids universe) Where none of them or their families exist. How will they get home? How will they adjust? and how will the other mermaids react when they find out about them? Zac X Lyla Might have Clewis later on as well. Some CamXNixie
Crossover - H2O: Just Add Water & Mako Mermaids - Rated: T - English - Adventure/Mystery - Chapters: 11 - Words: 12,987 - Reviews: 75 - Favs: 58 - Follows: 67 - Updated: 5/31 - Published: 9/26/2013
Tortured Light by PepperTwist reviews
A few months ago, Charlotte would've dreaded moving to the rainiest place in North America. But now, no longer a mermaid, she doesn't have to worry about that, or anything supernatural. But it doesn't seem like the mythical world is done with her quite yet.
Crossover - Twilight & H2O: Just Add Water - Rated: K - English - Supernatural/Drama - Chapters: 8 - Words: 6,570 - Reviews: 23 - Favs: 8 - Follows: 15 - Updated: 5/24 - Published: 5/23/2013
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: 19 - Words: 15,803 - Reviews: 35 - Favs: 10 - Follows: 20 - Updated: 5/24 - Published: 10/29/2012 - Willow R., Charlotte W.
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: 5 - Words: 3,765 - Reviews: 7 - Favs: 5 - Follows: 8 - Updated: 5/23 - Published: 10/16/2014 - [Cleo S., Jerome C.] Charlotte W., Nina M.
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: 9 - Words: 5,958 - Reviews: 22 - Favs: 7 - Follows: 14 - Updated: 5/6 - Published: 2/25 - [Annabeth C., Percy J.] Cleo S., Bella H.
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: 14 - Words: 56,417 - Reviews: 45 - Favs: 53 - Follows: 55 - Updated: 5/2 - Published: 8/3/2014
Sabrina the Teenage Witch: Meets The H20 mermaids by kyubi2020
Set after soul mates and Graduation. 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 and Harvey also starting his job, but as a strange evil tried to make their move against the mortal world. The arrival of Cleo, Nikki and Bella soon begins the events. Bethany/Amanda.
Crossover - Sabrina the Teenage Witch & H2O: Just Add Water - Rated: T - English - Adventure - Chapters: 1 - Words: 5,238 - Published: 4/30 - OC
Just Add The Originals by Crossover Specialist reviews
What happens when the mermaids meet the vampires? Extraordinary. Read and watch as a tale of love, deceit, and hunger for power plays out. Watch as families are reunited and torn apart. Hopefully, a lot better than it sounds.
Crossover - H2O: Just Add Water & Originals - Rated: T - English - Supernatural/Family - Chapters: 2 - Words: 1,925 - Reviews: 1 - Favs: 3 - Follows: 5 - Published: 4/29
Swimming in twilight by Nessie090603 reviews
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: 2 - Words: 944 - Reviews: 3 - Favs: 3 - Follows: 5 - Updated: 4/19 - Published: 2/24 - Bella, Edward, Rikki C., Bella H.
Triple by nina19123 reviews
Honestly am not sure how or why I wrote this. I remember writing this last summer and recently found it. decided to post it and go from there. I also SUCK at summaries so I can't really give you a description on what it'll be like. It'll mostly be focused on Cleo and i'll probably add more characters along the way but that's all I can say right now.
Crossover - Twilight & H2O: Just Add Water - Rated: T - English - Supernatural/Friendship - Chapters: 2 - Words: 3,573 - Reviews: 6 - Favs: 1 - Follows: 7 - Updated: 4/17 - Published: 3/4
H2O101 by MermaidAmber reviews
A little story that I thought up...Summery inside
Crossover - Zoey 101 & H2O: Just Add Water - Rated: K+ - English - Romance/Fantasy - Chapters: 8 - Words: 6,775 - Reviews: 33 - Favs: 23 - Follows: 31 - Updated: 4/6 - Published: 3/21/2011
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