The Ocean of Ooze was a body of liquid on Skaro that separated the continents of Davius, the original home of the Thals, and Dalazar, the original home of the humanoid Daleks. (COMIC: Genesis of Evil) The Ocean also contained the mist-shrouded, unexplored Forbidden Islands and the Island of Moving Mountains, which constantly changed shape. (DAN: The Dalek Book)