This exploration of the Bay of Mt. St. Michel studies the interrelationships between the tides, the flora and fauna, and man. Scientists investigating the bay shed light on the cause-and-effect relationships between these elements. The film explores the ties which unite the different environments, gradually revealing the absolute essence of this estuarial system: the constant exchanges between the salt meadows and the sea. This journey takes the form of a narrated investigation, which first expounds upon relevant ecodata about this bay and then moves into increasing logical, analytical detail and extensive questioning. This journey through the Bay of Mt. St. Michel is above all an attempt to unveil the workings of an ecosystem, of the ties that unite its components and maintain a harmonious natural balance. This film is part of the ‘Seasons of the Bay’ Series.