Sea Devils #31

A massive crimson sea creature dominates this 1966 DC cover, fangs bared and claws outstretched, while the Sea Devils crew scrambles aboard their submarine below, desperately pleading "We're not enemies!" The bold cover copy warns onlookers that somebody had better stop the fighting — the team is clashing with an innocent foe. Howard Purcell's cover art balances genuine menace with an intriguing moral twist, setting the stage for "The Day the Seas Went Wild.