Jaws- Vibrations

The Great White circled aimlessly. The rhythmic
thumping of helicopter vanes which’ was exciting
her had also jammed her computer. She could
ordinarily home quite precisely on a vibrating body,
zero in on a thrashing fish or a struggling seal. In
the deepest reaches of the ocean in the dark of the
night, she could find another wounded shark.

The beat she followed now seemed to be every-
where and nowhere. The hunt for its source was
fruitless, but she was unable to break from its
fascination. Once she swerved to scoop up a giant
squid, also confused by the sound of the whirling
blades, but mostly she wound in a pointless figure
8, five fathoms deep.

- Jaws 2, Page 111