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. Watch all your favourite ABC programs on ABC iview.

Search the images of the Great Barrier Reef and see if you can find Captain Barnacles, Kwazii and Peso as they try to find a way to hold back hungry swarms of coral eating starfish to save a new ...