Watch Online Free on Watchseries. Filmed in the Rhône River delta, Delta is the second part of the prelude to Cosmofonia, an ongoing film and sound project that shifts attention from a point of view to a point of hearing. Here, Paravel turns toward the inaudible sounds of the Earth: infrasonic vibrations, seismic resonances, interspecies signals, and the acoustic traces of human activity. Most of these frequencies remain beyond ordinary human perception. By rendering them audible, the work opens a new sensory field and invites audiences to encounter the environment not as scenery, but as a dense and active mesh of relations.