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Shark Repellent

Aug 19, 2026 · 29m

Summary

Heath, Noah, Eli, and Cecil discuss the US military’s failed WWII effort to create shark repellent, inspired by Mary Roach’s *Grunt*. They cover the absurd experiments involving shark goo, chemicals, and Julia Child’s involvement with the OSS. The hosts conclude that the project was scientifically futile, as sharks rarely attack humans, yet ineffective "shark baffles" were issued through the Vietnam War.

Topics discussed

Sponsors: Progressive Insurance and Stamps.com Show intro and host introductions Topic selection: WWII shark repellent and context The origin story: Henry Field and FDR The Ecuadorian pilot incident and Field's memo Assembling the team: Coolidge, Burden, and Springer Project 374 approval and initial brainstorming Testing substances and the shark goo experiment Springer's claims and the conflict of interest Isolating chemicals and preparing for field tests Comedy sketch: Field and FDR conversation Sponsors: Progressive, Grow Therapy, Poshmark, Stamps.com Julia Child's connection to the project Field test failures in Ecuador and dosage issues Navy takes over and the feeding frenzy test Scientific conclusion and the squid ink solution Modern guidelines and the reality of shark attacks Quiz segment and episode wrap-up Outro and sponsors: Jerry, Found, 1-800-Flowers, Cruise
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