Sea Devils #27

A diver finds himself dwarfed and imperiled by a massive, looming creature in this unsettling 1966 DC adventure, the cover by Howard Purcell delivering a genuinely creepy sense of scale as a one-celled diatom grows to monstrous proportions beneath the waves. The bold yellow banner warns of "a traitor in their ranks," while inset panels show fish fleeing in terror from the spreading weird ray — building real tension before you've even cracked the spine. Sea Devils #27 is a fine example of mid-'60s DC sci-fi thrills, blending underwater adventure with atomic-age anxieties about nature gone wildly out of control.