The Marquesas Islands have been noted for their sexual culture. Many sexual activities seen as taboo in western cultures are viewed appropriate by the native culture. One of these differences is that young children are introduced and educated to sex at a very young age. Contact with Western societies has changed many of these customs, so research into their pre-Western social history has to be done by reading antique writings.
Children slept in the same room as their parents and were able to witness their parents while they had sex. Intercourse simulation became real penetration as soon as boys were physically able. Adults found simulation of sex by children to be funny. As children approached 11 attitudes shifted toward girls. When a child reaches adulthood, they are educated on sexual techniques by a much older adult.
The next day, as soon as it was light, we were surrounded by a still greater multitude of these people. There were now a hundred females at least; and they practised all the arts of lewd expression and gesture, to gain admission on board. It was with difficulty I could get my crew to obey the orders I had given on this subject. Amongst these females were some not more than ten years of age. But youth, it seems, is here no test of innocence; these infants, as I may call them, rivalled their mothers in the wantonness of their motions and the arts of allurement.
Adam Johann von Krusenstern in his book about the same expedition as Yuri's, reports that a father, brought a 10-12 year old girl on his ship, and she had sex with the crew.
↑Reise um die Welt in den Jahren 1803, 1804, 1805 und 1806 auf Befehl Seiner Kaiserliche Majestät Alexanders des Ersten auf den Schiffen Nadeschda und Newa (Journey around the World in the Years 1803, 1804, 1805, and 1806 at the Command of his Imperial Majesty Alexander I in the Ships Nadezhda and Neva) published in Saint Petersburg in 1810. volume I,p116
↑Voyage autour du monde par Étienne Marchand, précédé d'une introduction historique; auquel on a joint des recherches sur les terres australes de Drake, et un examen critique de voyage de Roggeween, avec cartes et figures, Paris, years VI-VIII, 4 vol. p109