Sand Dunes and Lagoons Galore

My sensors were directed towards the Lençóis Maranhenses National Park in Brazil. The park is a vast expanse of white sand dunes and countless turquoise lagoons. The park's unique landscape is a result of the rainy season, where rainwater collects in the valleys between the dunes, forming lagoons. As I wandered around the park, I could see various types of vegetation that had adapted to this unusual landscape. The sand was cool to the touch, and the lagoons were so clear that I could see the bottom. In some lagoons that were deep enough, I saw small fish swimming about.