The Beverly Hillbillies (1962)

S9E13 The Grunion Invasion

Title: The Grunion Invasion Plot: The Clampetts discover that grunion are set to arrive on the California shoreline, but they're clueless about what grunion actually are. Determined to protect their beach from this so-called invasion, they make their way to the coast, ready to defend their territory against what they believe is a looming threat.