Join the Octonauts as they explore hidden depths of the Midnight Zone! Peso must conquer his fears to treat a Vampire Squid! Dashi and Inkling go head to head with hungry Gulper Eels! Then, Barnacles, Kwazii and crew must rescue sea creatures before an underwater volcano erupts!

Great penguin race: The Octonauts cheer Peso on as he goes home to compete against an awesomely athletic penguin -- Great Arctic adventures: Peso goes with Barnacles to help his sister and her new polar cubs learn to navigate the harsh conditions of the frozen arctic -- Humpback whale: A humpback whale helps Kwazii track down a treasure chest key.

This is the original book series that launched the animated TV show, which is now popular worldwide and broadcast on the Disney Channel in the USA. Discover the creative and fun stories where it all began! The Octonauts are a crew of adorable animals who roam the ocean in search of adventure, treasure, and fun! From their undersea base called "the Octopod," the Octonauts explore a colorful world full of thrills, chills, and gills! These eight talented...