The actress journeys more than 560km down Borneo's Kinabatangan river and along the island's coastline to explore the unique wildlife that lives in this threatened environment. With scientist Kerisha Kntayya, Judi joins a crocodile hunt with a difference. Kerisha plucks young crocodiles out of the water. Judi then joins Kerisha's team as they wrestle an adult croc as part of the study Kerisha hopes will help save these prehistoric creatures. The Oscar winner, who's had a fascination with bats from an early age, also explores the Gomantong cave, home to more than a million bats.