Beneath the limestone of southern Greece, in springs that have never known sunlight, researchers have formally named a creature that evolution has quietly shaped for generations in the dark — a small snail, now called Cyllena hermes, that carries no eyes and no pigment, because it has never needed either. The discovery, made by scientists at the National and Kapodistrian University of Athens, is less a finding than a recognition: life has been here all along, adapting in directions the surface world cannot imagine. It reminds us that the boundaries of the known are not the boundaries of the li