Octonauts & the Great Barrier Reef

 is a British special directed by Blair Simmons. The special follows Octonauts who must find a way to hold back hungry swarms of coral eating starfish to save a new friend's fragile reef home.

Summary
"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."

- Official Netflix synopsis

Cast and Characters

 * Simon Greenall
 * Rob Rackstraw
 * Jo Wyatt
 * Paul Buckley
 * Simon Foster
 * Teresa Gallagher
 * Richard Grieve
 * Michael Murphy
 * Paul Panting
 * Keith Wickham