Nick Offerman

Mr. Fish (voice)

Nina Oyama

Pip (voice)

Miranda Otto

Marin (voice)

Amy Sedaris

The Pink Dolphins – Brigitta, Greta and Karina (voice)

Jordin Sparks

Shimmer (voice)

Remy Hii

Benji (voice)

Mark Coles Smith

Hector (voice)

Nazeem Hussain

Archie (voice)

Mel Buttle

Shaz (voice)

Bessie Holland

Baz (voice)

Grant Denyer

Beautiful Mike (voice)

Anne Edmonds

Whale (voice)

Lloyd Langford

Bioluminescent Eel (voice)

Christopher James Baker

Fish #1 / Mail Fish / Poppa Fish / Fish #4 / Cuttlefish #1 / Chuck / Cuttlefish Worker #1 / Fish Critic (voice)

Nadine Bates

Clam / Fish #2 (voice)

Kristen Souvlis

Fish #3 (voice)

Andrew Buchanan

Red Starfish / Cuttlefish Worker #2 / Pip's Dad (voice)

Ricard Cussó

Hermit Crab / Sea Cucumber #1 (voice)

Annabel Maloney

Sea Cucumber #2 (voice)

Giema Contini

Crab Mum / Pip's Mum (voice)

Lucas Haddrick

Young Mr. Fish / Crab Son / Whale Pup (voice)

David P. Smith

Pufferfish (voice)

Benjamín Gorroño

Green Starfish (voice)

Andrew Cook

Lobster #1 (voice)

Sophie Henderson

Lobster #2 (voice)

Josef Switak

Sea Snail (voice)

Sarra Watts

Guided Meditation Voice (voice)