The films provided by the University of Washington, Department of Zoology, supported by the American National Science Foundation deal with the developmental biology of Zebra fish embryos at its various stages. One of the most interesting features is the availability of 3D films that follow Zebra fish gastrulation. Viewers can also use the arrow keys on their keyboard to view the films frame by frame. Time-lapse recordings that illustrate the morphogenesis of Zebra fish embryos are also available. All the images appear in black and white and are available in both QuickTime and Native MPEG formats. Thorough descriptions are provided and also some information on technical metadata.