Ramón ligt al bijna 30 jaar krachteloos in zijn bed, onder de hoede van zijn familie. Zijn enige uitzicht op het leven is het raam van zijn kamer, vlakbij de zee die hij ooit zo graag bereisde en waar hij het ongeluk kreeg dat een einde maakte aan zijn jeugd.
Nee, helaas is Mar adentro nog niet beschikbaar op Netflix in Nederland.
| Production | Fernando Bovaira | Producer |
| Writing | Alejandro Amenábar | Screenplay |
| Camera | Javier Aguirresarobe | Director of Photography |
| Production | Luis San Narciso | Casting |
| Production | Emiliano Otegui | Line Producer |
| Sound | Alejandro Amenábar | Original Music Composer |
| Art | Benjamín Fernández | Production Design |
| Art | Emilio Ardura | Set Decoration |
| Directing | Alejandro Amenábar | Director |
| Production | Alejandro Amenábar | Producer |
| Writing | Mateo Gil | Screenplay |
| Costume & Make-Up | Sonia Grande | Costume Design |
| Editing | Alejandro Amenábar | Editor |
| Visual Effects | Pau Costa | Special Effects Supervisor |
| Visual Effects | Félix Bergés | Visual Effects Supervisor |
| Visual Effects | Carlos Trijueque | Digital Compositors |
| Sound | Guillermo Solana | Boom Operator |
| Sound | Juan Ferro | Sound Editor |
| Sound | Ricardo Viñas | Dolby Consultant |
| Crew | David Campos | Special Effects |
| Visual Effects | Nike Alonso | Visual Effects Producer |
| Visual Effects | Guillermo Orbe | Digital Compositors |
| Costume & Make-Up | Manolo García | Hairstylist |
| Costume & Make-Up | Ana López-Puigcerver | Makeup Department Head |
| Visual Effects | Rafa Solórzano | Visual Effects Supervisor |
| Production | Emiliano Otegui | Production Manager |
| Visual Effects | Helmuth Barnert | Digital Compositors |
| Visual Effects | Thorsten Rienth | Digital Compositors |
| Art | Chris Fitzgerald | Sculptor |
| Visual Effects | Eduardo Díaz | Digital Compositors |
| Art | Benjamín Fernández | Art Direction |
| Sound | Alfonso Raposo | Sound mixer |
| Crew | Guiomar Alonso | Stunts |
| Directing | Walter Prieto | Assistant Director |
| Art | Alejandro Fernández | Assistant Art Director |
| Costume & Make-Up | Mara Collazo | Hairstylist |
| Sound | Ricardo Steinberg | Sound |
| Crew | Miguel Pedregosa | Stunt Coordinator |
| Camera | Josu Inchaustegui | Steadicam Operator |
| Directing | Yuyi Beringola | Script Supervisor |
| Camera | Teresa Isasi | Still Photographer |
| Editing | Carlos Agulló | Assistant Editor |
| Lighting | Rafael García Martos | Gaffer |
| Camera | José Manuel Herrero Gaspar | Underwater Camera |
| Crew | Paulino Fernández Ibáñez | Telecine Colorist |
| Sound | Xavier Capellas | Orchestrator |
| Art | Pedro Calderón | Painter |
| Art | Leopoldo Báez | Construction Coordinator |
| Costume & Make-Up | Ana Urosa | Makeup Artist |
| Costume & Make-Up | Jo Allen | Makeup Designer |
| Crew | David Martí | Makeup Effects |
| Crew | Eva Muslera | Production Controller |
| Editing | Yolanda Cáceres | Color Timer |
| Production | Rafael Toba | Production Coordinator |
| Costume & Make-Up | Carlos Montosa | Wigmaker |
| Production | José Miguel Mendiola | Production Accountant |
| Visual Effects | Gonzalo Carrión | 3D Supervisor |
| Production | Mar Francolí | Location Manager |
| Lighting | Miguel Ángel Cano | Electrician |
| Crew | Tino Torrescusa | Property Master |
| Sound | María Steinberg | Sound Effects Editor |
| Crew | Alberto Báez | Carpenter |
| Visual Effects | Rubén Sanz | Visual Effects Producer |
| Crew | Frédéric North | Pilot |
| Camera | Carlos Miguel | Key Grip |
| Sound | Mark Berrow | Musician |
| Crew | Luc Poullain | Aerial Coordinator |
| Camera | James Swanson | Aerial Director of Photography |
| Directing | José Ramón Otegui | Second Assistant Director |
| Editing | Felisa Catalinas | Negative Cutter |
| Art | Natalia Montes | Storyboard Artist |
| Art | Rubén Rivas | Graphic Designer |
| Camera | Gustavo de la Fuente | Assistant Camera |
| Production | Carmen Rico | Production Secretary |
| Crew | Javier Jal | Special Effects Technician |
| Editing | Miguel P. Gilaberte | Digital Intermediate Colorist |
| Costume & Make-Up | Cristina Martínez | Costume Assistant |
| Production | Francisco Arnoso 'Pixi' | Production Assistant |
| Directing | Larisa Balinge | Assistant Director |
| Sound | Lucio Godoy | Music Producer |
| Production | Soledad Cebrián | Accountant |
