Flipper & Lopaka S01E12 - The Castaway

Chief Kapuna believes his long lost brother, Bunti, has returned to Iloka. A decade earlier, Bunti had gone missing at sea just after being crowned chief. Kapuna was crowned in Bunti's place, and so he is uneasy about his return. But nobody on the island has actually seen Bunti - only heard him whistle. So Flipper begins to investigate.