Join the Octonauts as they embark on not one, not two, but twelve rescue missions! From attempting to dive deep into the abyssal zone, to encountering a school of toothy barracudas, to Barnacles seeking guidance from a mysterious sea turtle--it's time to sound the Octo-alert!

Title from container.

Mariana Trench adventure -- Barracudas -- Artificial reef -- Siphonophore -- Urchin invasion -- Lion's mane jellyfish -- Pelicans -- Red rock crabs -- Loggerhead sea turtle -- Harbor seal -- Yeti crab -- Over under adventure.