In autumn 1974, Steven Spielberg went out to Martha's Vineyard in New England with a small crew, a few boats and a rubber shark – and made motion picture history. Here's a selection of unseen pictures from the groundbreaking shoot
The sharks are constructed under the supervision of special effects man Bob Mattey in Sun Valley, CaliforniaPhotograph: 1974 Joe Alves /Courtesy of Moonrise MediaMakeup artists moisten the shark’s quickly drying skin to preserve the illusion of freshness Photograph: 1974 Jackie Baer /Courtesy of Moonrise MediaTwo different sharks were constructed for left-to-right and right-to-left movements – the other side has no skin. Here right-to-lefty is hoisted out of the water for a breakPhotograph: 1974 Edith Blake /Courtesy of Moonrise MediaThe shark gets another wash and brush-up from effectsman Richie Helmer. Effects supervisor Bob Mattey is behind the wheelPhotograph: 1974 Edith Blake /Courtesy of Moonrise MediaAnother shark was mounted on a platform; here it's headed toward Orca's stern (just visible on extreme right)Photograph: 1974 Charlie Blair /Courtesy of Moonrise MediaThe platform shark in action again; here riggers prep it for the boat attack scenePhotograph: 1974 Cal Acord /Courtesy of Moonrise MediaAnother sequence of the boat attack scene: the left-to-right shark smashes through Orca II’s transom. The prop shark was badly damaged as a resultPhotograph: 1974 Cal Acord /Courtesy of Moonrise MediaEffectsman Richie Helmer again, with the left-to-right shark. The shark props were nicknamed Bruce, after Steven Spielberg's lawyer Bruce RamerPhotograph: 1974 Cal Acord /Courtesy of Moonrise MediaEffectsman Cal Acord repairs the shark's teethPhotograph: 1974 Cal Acord /Courtesy of Moonrise MediaDirector Steven Spielberg lines up a shot into the shark's mouthPhotograph: 1974 Edith Blake /Courtesy of Moonrise MediaAnother 'platform shark' was built for the underwater cage sequences. Here it is readied in MGM’s studio tank. The tank would additionally be used for the underwater point-of-view shots of bathers’ dangling limbsPhotograph: 1974 Cal Acord /Courtesy of Moonrise Media