locations in Virginia, including areas in and around Crozet, Waynesboro, Richmond, Charlottesville, and Staunton, though some filming did take place at Universal Studios in Hollywood, California. Effects For the CGI used throughout the film, companies Rhythm & Hues (R&H) and Industrial Light & Magic (ILM) developed different parts of the film. R&H focused on the animation of the animals, while ILM completed the final scene of the ark rushing through Washington D.C. Lindy De Quattro, the ILM associate visual effects supervisor, revealed that "This is the first time where we had to do a whole series of shots that were happening mid-day, where you were going to get a really long look at the water and what it was doing." The company initially experienced problems creating the water effects and had to develop new tools which would choreograph the movements of the water. In addition, ILM used similar tools that were used on their prior film Poseidon. Lighting was also an issue as the characters on the ark had been filmed on a greenscreen stage, and the visual effects company had to ensure that the lighting matched that of the characters and the outside setting. Details were added to the ark for long-distance shots to make the design of the ark more appealing and relate the ark's size to scale in comparison to the amount of water. To complete the scene, ILM used thirty to sixty crew members and produced 200 shots over a yearlong period between April 2006 and May 2007. Rhythm & Hues created 300 pairs of animals for use on the ark and fifteen pairs with higher detail for closeup shots. R&H was also assisted by C.I.S. Hollywood, another visual effects company, who provided a large number of composites, involving hundreds of greenscreen animal elements. In scenes where there are multiple species of animals, crew members would film the animals on the greenscreen and R&H and C.I.S would digitally add the animals one at a time, sometimes taking several weeks to a couple of months. Andy Arnett, the animation supervisor, declared that "The research was extensive. It took six or seven months to perfect the look and feel of the animals before we had the first shot out the door." For the scene in Congressman Long's office, CGI was used the entire time for the fish that follow Evan around from the fish tank. Cafe FX, the