The Sea Inside is about Spaniard Ramón Sampedro, who fought a 30-year campaign to win the right to end his life with dignity. It is the story of Ramón’s relationships with two women: Julia a lawyer who supports his cause, and Rosa, a local woman who wants to convince him that life is worth living.
| Directing | Alejandro Amenábar | Director |
| Writing | Alejandro Amenábar | Screenplay |
| Writing | Mateo Gil | Screenplay |
| Production | Alejandro Amenábar | Producer |
| Production | Fernando Bovaira | Producer |
| Production | Emiliano Otegui | Line Producer |
| Sound | Alejandro Amenábar | Original Music Composer |
| Camera | Javier Aguirresarobe | Director of Photography |
| Production | Luis San Narciso | Casting |
| Art | Benjamín Fernández | Production Design |
| Art | Emilio Ardura | Set Decoration |
| Costume & Make-Up | Sonia Grande | Costume Design |
| Editing | Alejandro Amenábar | Editor |
| Art | Benjamín Fernández | Art Direction |
| Costume & Make-Up | Mara Collazo | Hairstylist |
| Art | Chris Fitzgerald | Sculptor |
| Costume & Make-Up | Manolo García | Hairstylist |
| Costume & Make-Up | Ana López-Puigcerver | Makeup Department Head |
| Production | Emiliano Otegui | Production Manager |
| Directing | Walter Prieto | Assistant Director |
| Art | Alejandro Fernández | Assistant Art Director |
| Sound | Juan Ferro | Sound Editor |
| Sound | Alfonso Raposo | Sound mixer |
| Sound | Guillermo Solana | Boom Operator |
| Sound | Ricardo Steinberg | Sound |
| Sound | Ricardo Viñas | Dolby Consultant |
| Crew | David Campos | Special Effects |
| Visual Effects | Pau Costa | Special Effects Supervisor |
| Visual Effects | Nike Alonso | Visual Effects Producer |
| Visual Effects | Helmuth Barnert | Digital Compositors |
| Visual Effects | Félix Bergés | Visual Effects Supervisor |
| Visual Effects | Eduardo Díaz | Digital Compositors |
| Visual Effects | Guillermo Orbe | Digital Compositors |
| Visual Effects | Thorsten Rienth | Digital Compositors |
| Visual Effects | Rafa Solórzano | Visual Effects Supervisor |
| Visual Effects | Carlos Trijueque | Digital Compositors |
| Crew | Guiomar Alonso | Stunts |
| Crew | Miguel Pedregosa | Stunt Coordinator |
| Lighting | Rafael García Martos | Gaffer |
| Camera | José Manuel Herrero Gaspar | Underwater Camera |
| Camera | Josu Inchaustegui | Steadicam Operator |
| Camera | Teresa Isasi | Still Photographer |
| Editing | Carlos Agulló | Assistant Editor |
| Crew | Paulino Fernández Ibáñez | Telecine Colorist |
| Sound | Xavier Capellas | Orchestrator |
| Directing | Yuyi Beringola | Script Supervisor |
| Art | Leopoldo Báez | Construction Coordinator |
| Art | Pedro Calderón | Painter |
| Costume & Make-Up | Ana Urosa | Makeup Artist |
| Costume & Make-Up | Jo Allen | Makeup Designer |
| Costume & Make-Up | Carlos Montosa | Wigmaker |
| Crew | Alberto Báez | Carpenter |
| Crew | David Martí | Makeup Effects |
| Crew | Eva Muslera | Production Controller |
| Crew | Tino Torrescusa | Property Master |
| Editing | Yolanda Cáceres | Color Timer |
| Lighting | Miguel Ángel Cano | Electrician |
| Production | Mar Francolí | Location Manager |
| Production | José Miguel Mendiola | Production Accountant |
| Production | Rafael Toba | Production Coordinator |
| Sound | María Steinberg | Sound Effects Editor |
| Visual Effects | Gonzalo Carrión | 3D Supervisor |
| Visual Effects | Rubén Sanz | Visual Effects Producer |
| Camera | Carlos Miguel | Key Grip |
| Crew | Luc Poullain | Aerial Coordinator |
| Camera | James Swanson | Aerial Director of Photography |
| Crew | Frédéric North | Pilot |
| Directing | José Ramón Otegui | Second Assistant Director |
| Editing | Felisa Catalinas | Negative Cutter |
| Sound | Mark Berrow | Musician |
| Costume & Make-Up | Cristina Martínez | Costume Assistant |
| Directing | Larisa Balinge | Assistant Director |
| Art | Rubén Rivas | Graphic Designer |
| Art | Natalia Montes | Storyboard Artist |
| Crew | Javier Jal | Special Effects Technician |
| Camera | Gustavo de la Fuente | Assistant Camera |
| Editing | Miguel P. Gilaberte | Digital Intermediate Colorist |
| Sound | Lucio Godoy | Music Producer |
| Production | Soledad Cebrián | Accountant |
| Production | Francisco Arnoso 'Pixi' | Production Assistant |
| Production | Carmen Rico | Production Secretary |
