Just when you think hospital staff have seen it all, along slithers an inexplicably lively 30-centimeter swamp eel—discovered, quite literally, where the sun doesn’t shine. This head-scratching medical episode from Huaihua, China, blends human curiosity with biology in ways textbooks never dared. Tempted to find out how an actual eel landed a starring role in abdominal drama? Dive in—if you dare.