Around 8h30 , departure in speedboat ride on the majestic Preguiças river, with its calm waters where we will have a sight of the bayous on their margin, mangrove, buritis, Juçara's trees (açai), tucunzeiros, as well as herons and kingfishers. We will make stops on communities of VASSOURAS, also known as small "Lençóis" and place where we can enjoy a delicious coconut water, interact with monkeys nails that dwell there, Mandacaru, small fishing village where we will ascend 160 steps in the Mandacaru's lighthouse to contemplate scenic view of the dunes, river and its estuary, ocean and vegetation typical. Next stop: Caburé, this being an arm of dunes located between the river and the Sea. After lunch, departure to Atins Village. Arrival and accommodation. Overnight in Atins.