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. (TV21: Genesis of Evil) The Ocean also contains the mist-shrouded, unexplored Forbidden Islands and the Island of Moving Mountains, which is constantly changing shape. (DWAN:The Dalek Book)
- The existence of Davius, Dalazar and the Ocean of Ooze seem to be contradicted by The Daleks and Genesis of the Daleks, in which Thals, Kaleds and Daleks inhabit the same continent.