Arrakis is the sole home for the spice Melange in the universe. Arrakis is also known as Dune due to its desert landscape. The only inhabitents of the planet Arrakis are the giant worms and Fremen. The atmosphere of the Arrakis causes people eyes to go bright blue. Although you don`t see it in the series or film, the planet Arrakis`s atemosphere changes from desert to temperate such as the enivronment in Europe or Northern America.