Sustainability science calls for new methodologies and collaborations that go beyond disciplinary boundaries. This points to a new role for sustainability science communication. Here, we explore how science communication can employ aesthetic formats (e.g., storytelling, performance, artistic installations) to promote transdisciplinary collaborations. We conducted a series of experiments in a master-level science communication course at the University of Copenhagen, engaging students, practitioners and researchers in experimental collaborations and qualitative data collection. Through thematic analysis of classroom observations and interviews, five elements of transdisciplinarity emerged: Acknowledgement of disciplinary identities, negotiation of diverse vocabularies, disruption of hierarchical structures, experience of novel insights and evident learning processes among participants. These moments challenged direct observation but became discernible through post hoc analysis. We suggest they constitute a sequence that together describes a transdisciplinary moment. We thus conclude that the aesthetic formats we employed were instrumental in disrupting conventional boundaries and enhancing collaboration across disciplines. However, we also acknowledge the complexities of achieving transdisciplinary moments and emphasize the importance of reflective practice.