Tu Araiawa (Fin Island) has officially been known by its dual name since 1983.1
Araiawa means rocks standing in the way and blocking a passage of water. This probably refers to the position of the island at the mouth of Greville Harbour.
The island was named Fin by European settlers.2
1. “Tu Araiawa Island (Fin Island)”, New Zealand Gazetteer, (Land Information New Zealand, 2018), accessed, June 25, 2018, https://gazetteer.linz.govt.nz/place/6430 .
2. Olive Baldwin, Story of New Zealand’s French Pass and d’Urville Island (Plimmerton: Fields Publishing House, 1979) 137.