Aquaman (1967)

Goliaths of the Deep-Sea Gorge (1x21)

Air date: Apr 06, 1968

A Gillman, a half human - half fish creature, is chasing Tusky. He barks for help and the aqua duo respond to save their friend. But rather than being an evil being he's actually in search of Aquaman's help. A Marine Mastadon Man has attacked his village and they are helpless. Aquaman lures the Mastadon Man away and does battle with him.