The Octonauts are a team of adventurers who explore the world's oceans, rescue aquatic creatures and protect their habitats, from the bustling eco-system along the Amazon River to the deepest depths of the Mariana Trench. Deploying a set of aquatic vehicles, Captain Barnacles, daredevil ex-pirate, Kwazii, medic Peso and the rest of the crew embark on missions around the globe before returning safely to their home base, the Octopod.

Originally broadcast as individual episodes of season four of the television program in 2015-2016.