Join global sensations, the Octonauts, in an exciting new title in the classic picture book series that inspired the phenomenally successful animated TV show, broadcast around the world.The Octonauts are a crew of cute animals who love to explore the big blue ocean. From their underwater base, the Octopod, the eight intrepid friends are always ready for fun and excitement!It was a sunny day under the South Pacific Ocean when. ALERT! ALERT! ALERT!The Octonauts meet Dunkie, a goldfish who can't stop growing. Finding an ocean big enough for him seems to be an impossible mission for the intrepid crew. until they discover a prehistoric, deep sea world. Is Dunkie really a goldfish after all?An action-packed underwater adventure to delight Octonauts fans!The Ugly Duckling meets Journey to the Centre of the Earth in this hugely exciting nautical adventure!