"In desperation, we came up with so many good ideas -- like the floating barrels, for instance, that were shown on the screen to suggest this shark beneath them, underwater -- and we did it because we didn't have the shark," Zanuck said. "In the script, the shark is on Page 1 when the girl gets eaten. It became more terrorizing than anything we could have hoped for. If we had CG then we would have had the shark in every frame."People, go back and watch the original Jaws. There are maybe one or two shots of Bruce where you can see the effect a bit, but the shark effects have aged extremely well. Don't confuse the original with the sequels. The shark in Jaws: The Revenge is the one that looks like the Universal Studios tram tour, not the original.