Baía do Dia Dois is a bay located in the municipality of Poconé, in the state of Mato Grosso, Brazil, situated within the vast Pantanal wetland ecosystem — one of the world's largest tropical wetlands. Positioned at approximately -17.608488, -57.557665, this water body is part of the intricate network of bays, lagoons, and floodplains that define the Pantanal landscape. The region surrounding Baía do Dia Dois is characterized by seasonal flooding cycles that are central to the ecology and fishing dynamics of the area, with the Pantanal's pulse of wet and dry seasons shaping fish behavior, water levels, and angling opportunities throughout the year. The bay sits in close proximity to several other notable fishing waters, including Lagoa Uberaba roughly 3 miles away, and a variety of other bays and lagoons within a 10-mile radius, reflecting the richly interconnected aquatic environment of this part of Mato Grosso.