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.
| Directing | Enrico Casarosa | Director |
| Production | Andrea Warren | Producer |
| Production | Pete Docter | Executive Producer |
| Sound | Dan Romer | Original Music Composer |
| Production | Natalie Lyon | Casting |
| Production | Kevin Reher | Casting |
| Crew | Niketa Roman | Post-Production Manager |
| Art | Nicolle Castro | Storyboard Artist |
| Sound | Justin Doyle | Sound Effects Editor |
| Sound | Pascal Garneau | Sound Effects Editor |
| Sound | Chris Scarabosio | Sound Re-Recording Mixer |
| Sound | Chris Scarabosio | Sound Designer |
| Sound | Chris Scarabosio | Supervising Sound Editor |
| Visual Effects | Simon Christen | Animation |
| Visual Effects | Scott Clark | Animation |
| Visual Effects | Youri Dekker | Animation |
| Visual Effects | Brandon Kern | Animation |
| Visual Effects | Tarun Lak | Animation |
| Visual Effects | Aviv Mano | Animation |
| Visual Effects | Aaron McGriff | Animation |
| Visual Effects | Nicole Ridgwell | Animation |
| Visual Effects | Daniel A. Rodriguez | Animation |
| Visual Effects | Sikand Srinivas | Animation |
| Visual Effects | David Torres | Animation |
| Visual Effects | Luis Carlos Uribe | Animation |
| Visual Effects | Bruna Berford | Fix Animator |
| Art | Yon Hui Lee | Storyboard Artist |
| Visual Effects | Kirsten Yamaguchi | Fix Animator |
| Production | Terri Douglas | ADR Voice Casting |
| Editing | Jessica Katz | Editorial Coordinator |
| Editing | Paloma Rodriguez | Assistant Editor |
| Crew | Ennio Morricone | In Memory Of |
| Sound | Mark Graham | Conductor |
| Directing | Kelly Bonbright | Script Supervisor |
| Directing | Rayna Helgens | Script Supervisor |
| Production | Kristian Kobe | Publicist |
| Costume & Make-Up | Amy L. Allen | Set Dressing Artist |
| Lighting | Jennifer Leigh King | Lighting Artist |
| Art | Daniela Strijleva | Production Design |
| Camera | David Juan Bianchi | Director of Photography |
| Camera | Kim White | Director of Photography |
| Visual Effects | Michael Venturini | Animation Supervisor |
| Visual Effects | David Ryu | Visual Effects Supervisor |
| Editing | Catherine Apple | Editor |
| Editing | Jason Hudak | Editor |
| Production | Peter Sohn | Executive Producer |
| Production | Kiri Hart | Executive Producer |
| Production | Kate Hansen-Birnbaum | Casting Associate |
| Writing | Enrico Casarosa | Story |
| Writing | Jesse Andrews | Story |
| Writing | Simon Stephenson | Story |
| Lighting | Sungyeon Joh | Lighting Artist |
| Directing | Seong-Young Kim | Layout |
| Writing | Julie Lynn | Story Consultant |
| Writing | Randall Green | Story Consultant |
| Writing | Jesse Andrews | Screenplay |
| Writing | Mike Jones | Screenplay |
| Production | Daniela Kriston | Researcher |
| Production | JD Ohlerking | Finance |
| Editing | Jesus Martinez | Dailies Manager |
| Sound | Kenny Pickett | Sound |
| Writing | John Hoffman | Story Supervisor |
