Alamar (2010)

Jorge and Roberta have been separated for several years. They simply come from opposite worlds: he likes an uncomplicated life in the jungle, while she prefers a more urban existence. He is Mexican and she is Italian, and she has decided to return to Rome with their five-year-old son, Natan. But before they leave, Jorge wishes to take young Natan on a trip, hoping to teach him about his Mayan origins in Mexico. At first the boy is physically and emotionally uncomfortable with the whole affair, and gets seasick on the boat taking them to their destination. But as father and son spend more time together, Natan begins a learning experience that will remain with him forever.

Source: TMDb