S2·E6 The Enforcer / The Shark / Planet of the Neanderthals / Flood of Diamonds

The Enforcer: Upon encountering a man named Garth-1 on a South Pacific Island, Wonder Woman and Aquaman head to his home Arcava (an underground city within a deserted South Pacific Island) to help free his people from an evil dictator called the Enforcer.

The Shark: The Wonder Twins, Zan and Jayna, must save two boys that are trapped underwater by a shark.

Planet of the Neanderthals: An evil scientist known as Varko devolves Earth back to a prehistoric planet and brings Neanderthals under his command to the present, which will remain so unless the Super Friends can stop him and retrieve the machine responsible for this from the prehistoric times it was placed in. With the help of Skylab, they build a time tunnel and bring his device back, restoring the world.

Flood of Diamonds: Aquaman and Green Lantern head to Africa to save trapped miners in a diamond mine that is slowly flooding.