The Flagrum or the Scourge of the Deep Seas, is a creature that resides in the oceans that surround Tamriel. The creature was born on the shores of Mount Orcanthus, and since then it began to grow quickly. However as millenias passed the creature grew so big that abandoned the beaches in search of a place with bigger room. There has not been any report of any serious attack since the First Age. The creature attacked the All Flags Navy, that had stopped on Mount Orcanthus for rest. The navy was completely destroyed, and very few of its crew managed to escape. When the crew returned back to Cyrodiil, they told numerous tales about the creature, although none seemed to believe it. However The Empire of Tamriel had long closed trade routes with the Summerset Isle. For two Eras the creature went to sleep. Until Orcanthus exploded, releasing one megaton of lava to the open sea. The creature then woke up.