This is episode four of Swimming with Shadows: A Radiolab Week of Sharks.

Alison Kock was working at a car wash in Cape Town when she made a discovery that completely changed the course of her life. Inside a customer’s trunk, she found photographs of white sharks flying so high above the water they looked like airplanes. She followed those photographs to False Bay, “the Great White Capital of the World.” These sharks, in this place, are the apex of apex predators. Or they were. Until they mysteriously began to disappear.

Special thanks to Kathryn Ayres.

EPISODE CREDITS: 
Reported by - Rachael Cusick 
Produced by - Simon Adler and Maria Paz Gutierrez
with help from - Rebecca Laks 
Original music from - Simon Adler and Maria Paz Gutierrez
Sound design contributed by - Jeremy Bloom
with mixing help from - Jeremy Bloom
Fact-checking by - Diane A. Kelly
and Edited by  - Pat Walters

Signup for our newsletter!! It includes short essays, recommendations, and details about other ways to interact with the show. Sign up (https://radiolab.org/newsletter)!

Radiolab is supported by listeners like you. Support Radiolab by becoming a member of The Lab (https://members.radiolab.org/) today.

Follow our show on Instagram, Twitter and Facebook @radiolab, and share your thoughts with us by emailing [email protected].

Leadership support for Radiolab’s science programming is provided by the Gordon and Betty Moore Foundation, Science Sandbox, a Simons Foundation Initiative, and the John Templeton Foundation. Foundational support for Radiolab was provided by the Alfred P. Sloan Foundation.