A species was formally cataloged exactly once and then completely vanished from the scientific record. pplpod explores this profound scientific mystery through the Wahai tree frog—scientifically known as Laetoria vagabunda—missing since 1878. This episode examines what happens when a piece of our natural world simply ghosts the scientific community, and what this void reveals about the actual limits of human knowledge in the 21st century. We live under a collective illusion that the world has been fully mapped, digitized, cataloged, and explained, available on glass rectangles in our pockets. Yet finding true voids in this digital landscape remains rare and meaningful. We analyze how the Wahai tree frog was formally documented, why it vanished, what conservation status now applies to a species nobody has encountered in over a cen ...