There is a skinny dipping scene at beginning of film where one boy has rear nudity. There is also frontal and rear nudity of two boys and a girl diving or jumping into river.
When Mérette (Anne Bos, 12) reaches for a waterlily, she trips and falls into the pond, so she strips out of the wet dress and runs naked into the pond. Then she spots a group of kids (4 boys and another girl) walking by and waves for them to join her into the pond, which they do. The scene finishes with all of them dancing around naked in the grass by the pond.