"Narration Recorder: Extreme temperatures and treacherous weather events make life outside the cities of Arrakis truly hostile, with sandstorms powerful enough to cut through metal. Only the native tribes known as the Fremen have adapted well enough to survive. Preferring to inhabit the remotest regions of Arrakis, the Fremen share the deep desert with the giant sandworms known to the Fremen as Shai-Hulud. Long exposure to spice has given the tribe their characteristic blue eyes, the Eyes of Ibad."