- Country: UK
- Genres: Adventure, Animation, Comedy
- Release: 2020-08-14
- Director: Blair Simmons
- Writers: Vicki Wong , Michael Murphy , Gabe Pulliam
- Language: English
- Stars: Teresa Gallagher , Teresa Gallagher , Teresa Gallagher , Wayne Grayson , Simon Greenall , Michael Murphy , Michael Murphy , Paul Panting , Rob Rackstraw , Rob Rackstraw , Helen Walsh , Helen Walsh , Keith Wickham , Keith Wickham , Keith Wickham , Andres Williams , Andres Williams , Andres Williams , Jo Wyatt , Jo Wyatt
- Runtime: 72 min
- Awards: 1 nomination
- AKA: Октонавты и пещеры Сак-Актун (Russian Federation) , Octonauts and the Caves of Sac Actun (United States of America) , Octonauts and the Caves of Sac Actun (Canada) , Los Octonautas y las cuevas de Sac Actun (Argentina) , Les Octonauts et les Grottes de Sac Actun (France, French Republic) , Οι Χταποδοναύτες και οι Σπηλιές του Σακ Ακτούν (Greece) , Octonauts & the Caves of Sac Actun (Australia) , Octonauts and the Caves of Sac Actun , Octonauterna och Sac Actun-grottorna (Sweden) , Octonauts and the Caves of Sac Actun (United Kingdom) , Oktonauci i jaskinie Sac Actun (Poland)
- Plot:
The Octonauts embark on an underwater adventure, navigating a set of challenging caves to help a small octopus friend return to the Caribbean Sea.
- IMDB:tt12759408
Octonauts and the Caves of Sac Actun Cast · · · ALL
Simon Greenall
Captain Barnacles (Voice)
Jo Wyatt
Tweak (Voice)
Keith Wickham
Shellington/Inkling (Voice)