Mar 6, 2026

Snail Sex Tape

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 Webster
Reported by - Molly Webster
Produced by - Mona Madgavkar, Annie McEwen, Molly Webster
Sound design contributed by - Mona Madgavkar, Annie McEwen
Fact-checking by - Diane A. Kelly
and Edited by  - Alex Neason


EPISODE CITATIONS:

Videos -  
A love dart being DARTED! (https://zpr.io/rYhLwXhaxQQP)  – Molly has watched this video so many times

Articles - 

Books - 
Nature’s Nether Regions: What the Sex Lives of Bugs, Birds, and Beasts Tell Us About Evolution, Biodiversity, and Ourselves” (https://zpr.io/ktMvJbZciCdD)  by evolutionary biologist Menno Schilthuizen.


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 radiolab@wnyc.org.

Leadership support for Radiolab’s science programming is provided by the Simons Foundation and the John Templeton Foundation. Foundational support for Radiolab was provided by the Alfred P. Sloan Foundation.

LIST OF TITLE CANDIDATES (for funsies):
Snail Sex Tape [this was our winner! It just happened to be listed first, but usually the first one does not win]
Sex Shells [yes’um]
Genitalia Marginalia [way to use the word “genitals”]
Love in the time of sex darts [!]
Escar-a-go-go [This is my new fave verb, “Let’s Escar-a-go-go!”]
Coming out of my shell
Sculpted by Sex
Heated Gastropods [period.]
Love changes everything
Dart-crossed lovers
I would stab 3000 times (And I would stab 3000 more)
The Pickup Dart-ist [Hands.Down.Brilliant]
Sex and the Snail-y [I mean…!]
Sex Lives of Snails
Snail Sex Work
Dances with Snails [loz, wut.]
Slime of Love
Sexploits of the Snail
Roses are red, violets are blue, snails stab each other with darts full of goo [This is more an episode “tease” than a title, but still fun!]
Shot through the heart
Escargotcha
Penis Face [if you listen to the episode, you’ll get it]
I Dart You [:cupid:]
Snail Sex Game
Cupid’s Dart [lulu’s fave]

THE LAB sticker

Unlock member-only exclusives and support the show

Exclusive Podcast Extras
Entire Podcast Archive
Listen Sponsor-Free
Behind-the-Scenes Content
Video Extras
Original Music & Playlists