Sea Devils #18

In "The Creatures from the Sub-World," the Sea Devils dive into a mystery when strange humanoid beings attack a ship, stealing only sacks of coffee. Pursuing the creatures through treacherous underwater canyons, the team discovers a hidden underground world—once submerged, now revealed in the depths of the earth.

In "The Sea Devil Creatures," the Sea Devils venture into an underground realm only to be transformed into the very creatures they sought, facing trial at the hands of their former foe, Captain Hood. As Dane and Judy resolve to return for the antidote, Biff and Nicky attempt to escape topside—only to be captured once more.

In "The Doom of the Crusher Plant," the Sea Devils face a desperate race against time as one of the subterranean creatures aids Nicky and Biff in reaching the surface—only to return and help Dane and Judy retrieve a vital antidote from a perilous plant. Trapped by the very thing they sought, the team must find a way to survive the underground world’s dangers before it’s too late.