The stunt woman worked as a mermaid at Florida’s Weeki Wachee Springs tourist attraction and had done work with many wild animals, such as a tiger and a bear.
Backlinie was going after her first movie because she knew Spielberg would be interested in something no other actress could offer.
“If you hire me, you might get close-ups of the stunt itself.” He told the director, “If you hire an actress, she’ll have to cover her face.”
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“I went to stunts to find the perfect stuntwoman, and Susan was up to the task,” Spielberg wrote in Laurent Bouzerau’s book Spielberg: The First Ten Years.