The 2019 Nat Geo nature docuseries that was narrated by Bear Grylls is called "Hostile Planet". It is a six-part documentary series that premiered on the National Geographic channel on April 1, 2019. The series focuses on the resilience of animals surviving in extreme habitats, and each episode characterizes one of the planets roughest environments, including jungles, mountains, deserts, oceans, the poles, and grasslands, and how each of its inhabitants acclimate to its turn of events. Bear Grylls is the host and narrator of the series and appears at the beginning and end of each installment.