 Caicai was sent to live in the sea to help care for it with the Ngen-ko (water spirits), and Tenten was sent to live on earth to help care for the earth with the other Ngen, and to help humanity; thus these two snakes were used as an instrument through which the will of the ancient Mapuche spirits was fulfilled.It is said that after Caicai awoke from his years-long slumber, he became enraged because of the ungratefulness that men showed for every gift given to them by the sea, and desired to punish humanity and to incorporate all terrestrial life to his dominions.Caicai used his fish-shaped tail to hit the water, causing a great flood, since Caicai ordered the waters to flood the valleys and hills, and to bring all its inhabitants to the bottom of the sea.