McHale's Navy S02 E16 Creature from McHale's Lagoon

Gruber and the guys try to make some money with some phony pearl oysters, but their scheme backfires, when a greedy Binghamton takes over their operation. Then, when Chief Urulu muscles in on Binghamton's business, McHale and The Crew put a stop to the whole operation, by taking advantage of an old native superstition, and some Japanese technology.