At the end of a long sandbank, an opening was created. It is through this channel that the ocean and the rivers meet. This mix between fresh and salt water has permitted to create the center of this film: The salt marsh. Serving as a backdrop to the grandiose landscapes of Gaspésie, life is revealed through fish, mammals and the birds that inhabit this majestic place. Spectacular scenes: seductions, assaults, copulations, births and deaths are shown to us. The salt marsh is recognized to be the most productive ecosystems on the planet and this film is an exceptional testimony of that.