Luca and his best friend Alberto experience an unforgettable summer on the Italian Riviera. But all the fun is threatened by a deeply-held secret: they are sea monsters from another world just below the water’s surface.
Jacob Tremblay
as Luca Paguro (voice)
Jack Dylan Grazer
as Alberto Scorfano (voice)
Emma Berman
as Giulia Marcovaldo (voice)
Saverio Raimondo
as Ercole Visconti (voice)
Maya Rudolph
as Daniela Paguro (voice)
Marco Barricelli
as Massimo Marcovaldo (voice)
Jim Gaffigan
as Lorenzo Paguro (voice)
Peter Sohn
as Ciccio (voice)
Lorenzo Crisci
as Guido (voice)
Marina Massironi
as Signora Marsigliese (voice)
Gino La Monica
as Tomasso (Old Fisherman) (voice)
Sandy Martin
as Grandma Paguro (voice)
