Exploring the intertwined narratives of interspecies communication and artificial intelligence, this paper revisits the past attempts (1960-70) to communicate with non-human intelligences, in order to navigate the urgency of planetary scale. From the efforts of John C. Lilly to talk with with dolphins, the pioneer plate and the recent developments of AI, this text analyses the doomism associated with human obsolescence. From the concept of « praxis of planetary » of Jennifer Garry’s, the narrative calls for a reconsideration of alien agency in the face of planetary-scale computation, encouraging a shift from viewing AI as a threat to understanding its role in a broader ecological and synthetic context.