A pool of water located next to the Dead Sea in the biblical region of Moab – modern day Jordan – has unexplainedly turned blood red. The Jordanian Water Ministry sent technical teams to take samples on Saturday after locals started posting pictures on social media – scientists believing, but not certain, that the color change has been caused by either algae, iron oxide, or the addition of a substance by humans. The images have sparked an online firestorm, with red water conjuring up thoughts of a biblical plague of blood – 1 of 10 cast by God upon the Pharoah of Egypt to free the Jews from slavery, according to the Bible.