The Ｍermaid exchanged her singing for walking on land. The voice of an infant who has not yet learned language is like foam that has not yet risen to the surface of the sea. Perhaps the silence of the sirens, like in Kafka's "The Silence of the Sirens," might travel underwater. Imagine that this world that we cannot perceive could eventually turn into a bubble. The film is an experiment in repeated exposures of a roll of 16mm film, combining digital and analog image sources and using pre-determined graphics to construct the synchronization of sound and image.