The medium-sized leech can move in an S-shape to swim and crawl like an inchworm on dry land, researchers said. Photo by 杨 震 via Unsplash For months, researchers returned to a single cave in southern ...

For centuries, observers have told tales of leeches leaping through the air in pursuit of their next meal—with written records of the creatures’ gravity-defying feats dating as far back as the 14th ...