Rivers are bodies of water that provide excellent habitats and food for many creatures on Earth. Rivers gave us better routes for commerce and recreation, as well as drinking water, irrigation, and more. But they also hide many secrets. A lot of shocking things are discovered in rivers all around the world all the time, and here are some that will surely surprise you. From the mysterious woman of River Seine to the ominous hunger stones in European rivers, here are the 15 scariest things found in rivers!