Showcase #31

This 1961 DC gem spotlights Aquaman and Aqualad in a story titled "The Sea Creatures from One Billion B.C.," and the cover by Dick Dillin and Sheldon Moldoff makes the threat immediately vivid — the duo is surrounded on all sides by a menagerie of monstrous prehistoric sea creatures, from a fanged purple fish and a hulking blue serpent to a massive red crustacean and a snapping long-necked beast, while Aqualad cries out that they're trapped by a whole army of prehistoric fish. It's a wonderfully imaginative Silver Age setup, capturing the era's appetite for ancient creatures and oceanic adventure in one packed, colorful image.