This is an animated wallpaper for Ubuntu.
It contains 9 Ubuntu and 9 Gnome wallpapers downloaded from the internet (and to be found in our gallery). Download HERE, when download extract the .tar.gz file and copy+paste the ubuntu-gnome folder into your usr/share/backgrounds folder. Then open your Appearance Preferences (System -> Preferences -> Appearance) and select the Background tab. Click on the Add button first change from Images to All files shown (click the Images button in the right bottom corner) and go to the usr/share/background folder and open the ubuntu-gnome folder. Select the ubuntu-gnome.xml file and click the Open button.