Kai-n-Tiku-Aba
In Kiribati mythology, Kai-n-Tiku-Aba is a sacred tree located in Samoa, which grew on the back of a man named Na Abitu. Koura-Abi, a destructive man, broke it. Sorrowful, the people of Samoa scattered across the world.Origins
This myth is from Kiribati, and explains why the I-Kiribati migrated to Kiribati from Samoa.