Auditions were held on Fri 9th August and Sat 10th August. The audition panel had a had time picking a cast from the quality of auditionees and wish to thank everyone who auditioned.
| Marlin | Gabriel Dunwoodie-Halverson |
| Dory | Alyssa Starkey |
| Nemo | Charlize Carrier |
| Coral | Serena Troncrosso |
| Professor Ray | Toby Conlan |
| Sheldon | Riley Cross |
| Tad | Stella Altice |
| Pearl | Olivia-Rose Ryan |
| Sheldon’s Parent | Aryelle Ryan |
| Tad’s Parent | Sophie Meany |
| Pearl’s Parent | Harriette Killips |
| Bruce | Luke Corbett |
| Anchor | Jack Bennetts |
| Chum | Harriette O’Hehir |
| Gill | Simone Altice |
| Bloat | Amber Ivers |
| Peach | Destiny Goodsell |
| Gurgle | Alice Speelman |
| Jacques | Mila Hunter |
| Bubbles | Chelsea Brown |
| Nigel | Archie Dempster |
| Flo | Cleo Beesley |
| Crush | Violet Hansen |
| Breeze | Audrey Johannes |
| Wave | Lilly Matthews |
| Caspian | Josie Litchfield |
| Kai | Maegan Spencer |
| Squirt | Nicholas Corbett |
| Swings | Mila Hunter |
| Archie Dempster |
| Ensemble | |
| Camille | Anais |
| Mars | Behn-Moore |
| Mila | Bomba |
| Elka | Brettoner |
| Scarlett | Brodecky |
| Pania | Conan |
| Olivia | Crandell |
| Lulu | Davidson |
| Daisy | Haines |
| Poppy | Haines |
| Scarlett | Hausou |
| Tahlia | Hill |
| Dylan | Jones |
| Millie | Ledgard |
| Abigail | McCarthy |
| Jazmin | McKinnon |
| Joy | Meany |
| Polly | Meany |
| Zulou | Mumford |
| Clementine | O’Hehir |
| Ruby | Paynter |
| Lily | Peters |
| Mayah | Ryan |
| Alexandra | Simpson |
| Frankie | Simpson |
| Nixon | Smith |
| Amelia | Staader |
| Leilani | Tiatia |
| Ryder | Tuohy |
| River | Tuohy |
| Phoenix | Walker |
| Mackenzie | Wells |
| Emeline | Wilson |
| Mila | Woon |