Kanaka ascribed to the Caribbean? !!?
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Mahana occurs as a place name in several parts of Hawai'i.

One is the Ahupua'a neighboorhood of Lanai City on Lanai. Another is on Maui.
The most likely area on which the lost song is based, however, is near the south tip of the Big Island; Papakolea Beach in Mahana Bay near South Point is known also as Mahana Beach, or Green Sands Beach. The area had important temples, and permanent canoe moorings are preserved near there at Ka Lai.

Mahana means warm, but that doesn't help.