Starting at Imbak Falls, wildlife photographer Cede Prudente together with boatman Rizal start their journey down Borneo's longest river the Kinabatangan.

Descending from the highlands, Wildlife Photographer Cede Prudente and boatman Rizal continue their journey as they reach the astoundingly varied waters of the Kinabatangan proper.

Cede Prudente meets village elder Patti Arsah and his grandson; Marc Ancranez works with villagers to save the orangutan; Luke Evans attaches a satellite tracker to a wild saltwater crocodile.