The deepest point on the surface of Earth is the Dead Sea in Israel. Now a joint Israeli-German team of scientists found several systems of freshwater springs on the Dead Sea floor. Their presence has been speculated for decades as concentric ripples on the water surface are visible near the shore, but only with divers it was possible to detect this complex system of springs reaching 30 m depth. To locate and study these springs was quite a task for the scientific diving team, as the high salt concentration makes the diving dangerous and difficult. The divers located the springs and took water and sediment samples in which they detected novel microorganisms....