H2O: Just Add Water (Season 4)

Promo poster starring Cariba Heine as Rikki and Zayne Emory as Nash.

The fourth season of the Australian television series H2O: Just Add Water, commenced airing in on July 4, 2016 and will consist of 26 episodes. The season continues the story of Cleo, Rikki and Bella, with the return of long-gone Emma and the addition of a new member.

Plot

As Emma returns she come across problems with Bella - feeling replaced. Cleo and Lewis work their long-distance relationship, and Rikki falls for the new guy, Nash, who turn out to be just like them, yet has to fight over him with another girl.

Cast

Main cast

Phoebe Tonkin as Cleo Sertori
Cariba Heine as Rikki Chadwick
Claire Holt as Emma Gilbert
Indiana Evans as Isabella "Bella" Hartley
Luke Mitchell as Will Benjamin
Zayne Emory as Nash McLaren
Angus McLaren as Lewis McCartney
Burgess Abernethy as Zane Bennett
Taryn Marler as Sophie Benjamin
Gemma Forsyth as Evie McLaren
Ariana Grande as Evelyn Lopez
Peter Hermann as Mr. Hartley
Jason Dolley as Jason Hartley
Isla Fisher as Ava Watsford-Hartley

Main cast merpeople. From left to right Emma (Claire Holt), Rikki (Cariba Heine), Cleo (Phoebe Tonkin), Bella (Indiana Evans) and Nash (Zayne Emory).