This project has supplemental materials for: Freytag, A. et al. (2024) ‘Explaining the Rich Entertainment Appeal of Nature Documentaries and its Conflicting Motivational Consequences’, *Mass Communication and Society* [Accepted]. **Abstract** Nature documentaries are among the most popular media formats but have so far been understudied in communication research. However, due to the format’s multifaceted potential to simultaneously inform, entertain, and persuade, nature documentaries seem particularly worthy of investigation. The present contribution has two aims: (1) to explain how nature documentaries facilitate entertainment responses in their viewers, and (2) to investigate how entertainment experiences resulting from watching nature documentaries are linked with viewers’ pro-environmental behavior intentions and travel intentions. To establish a firm theoretical base, we integrated conceptual foundations from entertainment research and environmental psychology. To test our hypotheses, we analyzed data from two preregistered experiments: a paper-pencil study (N = 179) and an online study that aimed to replicate the findings of our first study (N = 308). Our findings provide initial evidence for the dual (i.e., hedonic and eudaimonic) entertainment qualities of nature documentaries and the mediating roles of suspense and awe. Furthermore, the results suggest that viewers’ hedonic entertainment experience is a relevant underpinning of their intention to travel to the depicted destination, whereas their eudaimonic experience inspires them to take action to protect the environment.