Saco do Laranjal is a coastal fishing area within the expansive Patos Lagoon estuary system in southern Brazil. This estuarine environment, where freshwater from the lagoon mixes with the saltwater of the Atlantic, creates a rich and productive habitat for a variety of marine species. The area is characterized by its tidal influence, sheltered bays, and connection to the larger lagoon complex, supporting both recreational and artisanal fishing activities.