Wikipedia
Tafahi
Tafahi is a small island in the north of the Tonga archipelago, in fact closer to Savaii (Sāmoa) than the main islands of Tonga. It is only north-northeast away from Niuatoputapu, and fishermen communicate in small outboard motorboats almost daily between the two.
Other names for Tafahi are Cocos Eylant (coconut island) or Boscawen island.