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 Luca Paguro (voice)
Jack Dylan Grazer Alberto Scorfano (voice)
Emma Berman Giulia Marcovaldo (voice)
Saverio Raimondo Ercole Visconti (voice)
Maya Rudolph Daniela Paguro (voice)
Marco Barricelli Massimo Marcovaldo (voice)
Jim Gaffigan Lorenzo Paguro (voice)
Peter Sohn Ciccio (voice)
Lorenzo Crisci Guido (voice)
Marina Massironi Signora Marsigliese (voice)
Gino La Monica Tomasso (Old Fisherman) (voice)
Sandy Martin Grandma Paguro (voice)
Giacomo Gianniotti Giacomo (Young Fisherman) (voice)
Elisa Gabrielli Concetta Aragosta (voice)
Mimi Maynard Pinuccia Aragosta (voice)
Sacha Baron Cohen Uncle Ugo (voice)
Francesca Fanti Maggiore (Cop) (voice)
Jonathan Nichols-Navarro Priest (voice)
Enrico Casarosa Card Player / Angry Fisherman (voice)
Jim Pirri Mr. Branzino (voice)
Arturo Sorino Additional Voices (voice)