Snail Sex Tape

Snail Sex Tape

From Radiolab by WNYC Studios

March 6, 2026 · 30 min · Episode 683

About this episode

This episode explores the surprising and complex sex lives of snails, including their unique reproductive behaviors and evolutionary adaptations.

In this episode, we consider a creature we often don’t think much about—the snail. And not just snails, but their sex lives. Which, as it turns out, is epic. There is persuasion and subterfuge, spaghetti penises and co-copulation. And this very surprising habit—erm kink—of making tiny arrows (actually!) and stabbing each other with them. Known as a “love dart,” these limestone daggers aren’t just a strange trick of nature—they have a deep evolutionary purpose. Special thanks to Menno Schilthuizen and Aaron Chase.EPISODE CREDITS: Hosted by - Molly WebsterReported by - Molly WebsterProduced by - Mona Madgavkar, Annie McEwen, Molly WebsterSound design contributed by - Mona Madgavkar, Annie McEwenFact-checking by - Diane A. Kellyand Edited by - Alex Neason EPISODE CITATIONS:Videos - A love dart being DARTED! (https://zpr.io/rYhLwXhaxQQP) – Molly has watched this video so many timesArticles - Changes in the reproductive system of the snail Helix aspersa caused by mucus from the love dart. (https://zpr.io/xxjuCcTyiVJV) by Koene JM, Chase R. J Exp Biol. The snail's love-dart delivers mucus to increase paternity. By Chase R, Blanchard KC. Proc Biol Sci. A love-dart at the heart of sexual…

People in this episode

Host: Molly Webster

Topics covered

  • snails
  • reproduction
  • evolution
  • sexual behavior
  • nature
  • documentary

Keywords

  • snail
  • love dart
  • reproductive system
  • evolution
  • sexual conflict
  • nature documentary

Mentioned in this episode

Books & works: Nature’s Nether Regions: What the Sex Lives of Bugs, Birds, and Beasts, Changes in the reproductive system of the snail Helix aspersa caused by mucus from the love dart., The snail's love-dart delivers mucus to increase paternity., A love-dart at the heart of sexual conflict in snails

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