The Octonauts return in a special episode of the animated adventure series, which sees Captain Barnacles Bear, Lieutenant Kwazii Cat, and Medic Peso Penguin ready to dive into action whenever ...

Professor Natquik is Captain Barnacles' old friend. He taught Barnacles how to do field research when he was a Polar Bear Scout. Min is a red panda who lives in China beside the Yangtze River.

Captain Barnacles Bear, Lieutenant Kwazii Cat, Medic Peso Penguin and the crew head off on an adventure to the deepest, darkest depths of the Amazon River in search of a hidden city full of treasure.