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.