Here's a list of the cast members during the series.
H2O: Just Add Water
Cariba Heine, Phoebe Tonkin, Indiana Evans and Angus McLaren.
Main Cast
- Claire Holt as Emma Gilbert (season 1-2)
- Phoebe Tonkin as Cleo Sertori
- Cariba Heine as Rikki Chadwick
- Indiana Evans as Isabella Hartley (season 3)
- Angus McLaren as Lewis McCartney
- Luke Mitchell as Will Benjamin (season 3)
- Burgess Abernethy as Zane Bennett
- Brittany Byrnes as Charlotte Watsford (season 2)
Supporting Cast
- Cleo Massey as Kim Sertori
- Trent Sullivan as Elliot Gilbert (season 1-2)
- Ariu Lang Sio as Wilfred (season 1-2)
- Craig Horner as Ash Dove (season 2)
- Annabelle Stephenson as Miriam Kent (season 1)
- Christopher Poree as Byron (season 1)
- Christine Amor as Louise Chatham (season 1)
- Taryn Marler as Julia Dove (season 2) and Sophie Benjamin (season 3)
- Jamie Timony as Nate
- Alan David Lee as Donald Sertori
Mako: Island of Secrets
Main Cast
- Lucy Fry as Lyla
- Ivy Latimer as Nixie
- Amy Ruffle as Sirena
- Chai Romruen as Zac Blakely
- Dominic Deutscher as Cam
- Gemma Forsyth as Evie McLaren
- Kerith Atkinson as Rita Santos
- Rowan Hills as David
- Allie Bertram as Mimmi
- Isabel Durant as Ondina
- Alex Cubis as Erik
Supporting Cast
- Brooke Nichole Lee as Carly
- Laura Keneally as Mrs Blakely
- John O'Brien as Rob Blakely
- Jenna Rosenow as Aquata
- Angelee Snow as Maya
- Victor Parascos as Mick
- Nick Wright as Joe