Alexandre Bacon

as Katak (voice)

Nancy Bernier

as Femelle béluga adulte / Veau béluga (voice)

Jeff Boudreault

as Bosco (voice)

Benoît Brière

as Paparrazzi / Phoque 1 (voice)

Jérémie Desbiens

as Albi (voice)

Martin Drainville

as Scoop / Phoque 2 (voice)

Marie-Thérèse Fortin

as Perlette / Macareux 2 (voice)

Carolanne Foucher

as Sim / Boussole / Compas (voice)

Yves Jacques

as Cyrano (voice)

Émilie Josset

as Jack-Lyn (voice)

Renaud Lacelle-Bourdon

as Kami (voice)

Maxime Le Flaguais

as Katak-Le-Vieux (voice)

Jacques Leblanc

as Vieux-Nic (voice)

Johanne Léveillé

as Autres voix (voice)

Justine Major

as Estelle / Naïa / Macadoune / Morue 2 (voice)

Ludivine Reding

as Lulu (voice)

Mario Saint-Amand

as Jack-Knife (voice)

Guylaine Tremblay

as Marine (voice)