Transmedia storytelling can enhance creative public participation collaborations. I overview the emergence of integrated transmedia storytelling and reflect on examples that illustrate its narrative and critical contributions to public participation. I also provide a case study of my own applied project, a website called Safe Beaches, Shellfish, & You that uses transmedia to engage collaborators in communication about and for environments. Finally, I argue that transmedia is more a process of storymaking than storytelling, and that mindful and ethically engaged transmedia storymaking meets the needs of both researchers and stakeholders connected through sustainability science.