H2O: Just Add Water and Gravity Falls Crossovers
Ghostly Mer-Twins by Vampiresdude reviews
40 years after P.P. Danny's daughter had twins. Thirteen years later Dipper and Mabel Pines(the twins) spend their next summer with Grunkle Stan in Austrailia. Secrets will be revealed and mysteries uncovered.
Rated: K+ - English - Adventure/Supernatural - Chapters: 1 - Words: 557 - Reviews: 3 - Follows: 1 - Published: 6/30/2013 - Cleo S., Emma G., Dipper P., Mabel P.
Gravity Falls: Just add water by Mysticalanimallover reviews
This is a story of three friends who get turned into merpeople.
Rated: T - English - Supernatural/Adventure - Chapters: 1 - Words: 279 - Reviews: 6 - Favs: 5 - Follows: 4 - Published: 6/12/2013 - Dipper P., Mabel P., Wendy
Gravity H2O by meapzilla2mouse reviews
The polls are in, official plot: D Nina and Eddie visit America and find out that, not only are they related, but they have twin cousins their age that are being sent along with them to the Gold Coast. When the whole Sibuna gang is mixed with the H2O gang and the GF twins, lots of detectives, liars and secret keepers are about to colide... *possible adding of Wendy and Soos* UPDATE
Rated: T - English - Adventure/Mystery - Chapters: 3 - Words: 2,017 - Reviews: 26 - Favs: 3 - Follows: 4 - Updated: 5/22/2013 - Published: 9/28/2012