Always ready to embark on a new and exciting mission, The Octonauts follow an old map in this adventure. Kwazii believes it will lead them to treasure guarded by a sea monster, but instead they meet a playful octopus with all kinds of surprising abilities! With a flap to lift on each page, join Barnacles, Kwazii, Peso and the rest of the crew on a watery game of hide and seek.
