In this musical special, the Octonauts must find a way to hold back hungry swarms of coral-eating starfish to save a new friend’s fragile reef home.

The Octonauts embark on an underwater adventure, navigating a set of challenging caves to help a small octopus friend return to the Caribbean Sea.

In this film’s adventure, a volcano erupts suddenly, suddenly awakening the Pacific Ocean floor of hundreds of volcanoes composed of the “ring of fire”, this sudden event quickly turned into…