In Maori mythology, Tane-Rore is the personification of shimmering air as deity Tanerore performs a haka for his mother Hine Ruamati.
Tama-nui-te-ra had two wives, Winter maid Hine-takurua and the Summer maid Hine-raumati. The child of Tama-nui-te-ra and Hine-raumati, Tane-rore is credited with the origin of dance.
The wiriwiri trembling hand action performed during the Haka dance is a physical representation of the shimmering heat referred to in 'Te haka a Tanerore'.
It is Maori belief that on occasions when the land is so hot that the air shimmers, you can see Tanerore perform a haka for his mother.
The wiriwiri or shimmering air is reminiscent of his trembling hand actions.