In a video shot on September 25, 2022, a couple from Tangará da Serra, Brazil decided to dye the water of a waterfall blue during a gender reveal party for the upcoming birth of their baby. The video was posted on Instagram, but it caused a lot of outrage from users before it was finally deleted. The Minister of Environment of Mato Grosso (SEMA) announced the opening of an investigation into the pair to determine whether products used to dye the waterfall's water had contaminated the source, as the Queima Pé River is an important source of water for the region.