The actresses put full cream milk into their eyes to help them keep their eyes open underwater
Claire Holt left the show at the end of season 2 to film Messengers 2:The scarecrow.With the characters departure explained as traveling the world with her family
Angus McLaren does not appear regularly in season 3 due to filming Packed to the Rafters
The girls powers are as follows: Cleo can manipulate water,Emma can freeze water,and Rikki can boil water.In season 2,they gained weather control: Cleo can manipulate wind,Emma can draw moisture from the air to freeze,and Rikki can draw forth lightning which catches thing on fire.Bella,the new mermaid introduced in season 3,crystallize and gelatinize water
Phoebe Tonkin and Claire Holt both went on to appear in The Vampire Diaries and its spin-off The Originals
Cariba Heine hired a professional trainer to help improve her swimming while auditioning for the role of Rikki Chadwick
The theme song at the beginning of each episode is sang by a different singer each season.Season 1 was Ellie Henderson,season 2 was Kate Alexa,and Season 3 was Indiana Evans,who also protrayed Isabella Hartley
During preproduction,each girl that would be a mermaid during the season would get a molding done of her legs so they could make the mermaid tails for the scenes where they are in mermaid form
Only 2 seasons with a total of 52 episodes were originally planned but due to a popular demand,a 3rd and final season was filmed.Season 1 premiered in July 2006,followed by season 2 in September 2007, season 3 first aired in the UK in October 2009 with the Australian premiere occurring in May 2010
Every season starts with a full moon
All of the three lockets that Emma,Rikki and Cleo get,have gems that matchup with their powers.Emma has a white stone,Rikki has a red stone,and Cleo has a blue stone
Nickelodeon advertised a 15 minute sneak peek 2 weeks before the show was aired
While clearing part of the jungle for filming season 3 they found an overturned truck and tried to get it out with a crane
The mermaids Emma,Cleo and Rikki wardrobe frequently followed a color scheme:Emma white/blue. Cleo pink/purple. And Rikki black/red
Every season has a different enemy or bad girl.season 1 is Miriam Kent,season 2 is Charlotte Watsford and season 3 is Sophie Benjamin
