How do oysters generate pearls? - Rob Ulrich episode artwork

EPISODE · Apr 28, 2026 · 7 MIN

How do oysters generate pearls? - Rob Ulrich

from TED-Ed · host TED-Ed

Explore how oysters use calcium carbonate to create pearls, and how this chemical compound creates a vast array of other materials.--Despite their iridescent colors and smooth shapes, pearls are actually made of the exact same material as the craggy shell that surrounds them. Pearls, urchin spines, the shells of mussels, snails and clams, even coral— all these structures are made out of the same chemical compound: calcium carbonate. So how does this single ingredient form such a vast array of materials? Rob Ulrich investigates.Lesson by Rob Ulrich, directed by Ivana Bošnjak.Support Our Non-Profit Mission----------------------------------------------Support us on Patreon: http://bit.ly/TEDEdPatreonCheck out our merch: http://bit.ly/TEDEDShop----------------------------------------------Connect With Us----------------------------------------------Sign up for our newsletter: http://bit.ly/TEDEdNewsletterFollow us on Facebook: http://bit.ly/TEDEdFacebookFind us on Twitter: http://bit.ly/TEDEdTwitterPeep us on Instagram: http://bit.ly/TEDEdInstagram----------------------------------------------Keep Learning----------------------------------------------View full lesson: https://ed.ted.com/lessons/how-do-oysters-make-pearls-rob-ulrichDig deeper with additional resources: https://ed.ted.com/lessons/how-do-oysters-make-pearls-rob-ulrich#digdeeperMusic: https://www.campstudio.co----------------------------------------------Thank you so much to our patrons for your support! Without you this video would not be possible! Khalifa Alhulail, Martin Stephen, Jose Henrique Leopoldo e Silva, Mandeep Singh, Abhijit Kiran Valluri, Morgan Williams, Devin Harris, Pavel Zalevskiy, Karen Goepen-Wee, Filip Dabrowski, Barbara Smalley, Megan Douglas, Tim Leistikow, Ka-Hei Law, Hiroshi Uchiyama, Mark Morris, Misaki Sato, EdoKun, SookKwan Loong, Bev Millar, Lex Azevedo, Michael Aquilina, Jason A Saslow, Yansong Li, Cristóbal Moenne, Dawn Jordan, Prasanth Mathialagan, Samuel Doerle, David Rosario, Dominik Kugelmann - they-them, Siamak Hajizadeh, Ryohky Araya, Mayank Kaul, Christophe Dessalles, Heather Slater, Sandra Tersluisen, Zhexi Shan, Bárbara Nazaré, Andrea Feliz, Victor E Karhel, Sydney Evans, Latora, Noel Situ, emily lam, Sid, Niccolò Frassetto, Mana, I'm here because of Knowledge Fight Facebook group., Linda Freedman and Edgardo Cuellar. Learn more about your ad choices. Visit megaphone.fm/adchoices

Explore how oysters use calcium carbonate to create pearls, and how this chemical compound creates a vast array of other materials.--Despite their iridescent colors and smooth shapes, pearls are actually made of the exact same material as the craggy shell that surrounds them. Pearls, urchin spines, the shells of mussels, snails and clams, even coral— all these structures are made out of the same chemical compound: calcium carbonate. So how does this single ingredient form such a vast array of materials? Rob Ulrich investigates.Lesson by Rob Ulrich, directed by Ivana Bošnjak.Support Our Non-Profit Mission----------------------------------------------Support us on Patreon: http://bit.ly/TEDEdPatreonCheck out our merch: http://bit.ly/TEDEDShop----------------------------------------------Connect With Us----------------------------------------------Sign up for our newsletter: http://bit.ly/TEDEdNewsletterFollow us on Facebook: http://bit.ly/TEDEdFacebookFind us on Twitter: http://bit.ly/TEDEdTwitterPeep us on Instagram: http://bit.ly/TEDEdInstagram----------------------------------------------Keep Learning----------------------------------------------View full lesson: https://ed.ted.com/lessons/how-do-oysters-make-pearls-rob-ulrichDig deeper with additional resources: https://ed.ted.com/lessons/how-do-oysters-make-pearls-rob-ulrich#digdeeperMusic: https://www.campstudio.co----------------------------------------------Thank you so much to our patrons for your support! Without you this video would not be possible! Khalifa Alhulail, Martin Stephen, Jose Henrique Leopoldo e Silva, Mandeep Singh, Abhijit Kiran Valluri, Morgan Williams, Devin Harris, Pavel Zalevskiy, Karen Goepen-Wee, Filip Dabrowski, Barbara Smalley, Megan Douglas, Tim Leistikow, Ka-Hei Law, Hiroshi Uchiyama, Mark Morris, Misaki Sato, EdoKun, SookKwan Loong, Bev Millar, Lex Azevedo, Michael Aquilina, Jason A Saslow, Yansong Li, Cristóbal Moenne, Dawn Jordan, Prasanth Mathialagan, Samuel Doerle, David Rosario, Dominik Kugelmann - they-them, Siamak Hajizadeh, Ryohky Araya, Mayank Kaul, Christophe Dessalles, Heather Slater, Sandra Tersluisen, Zhexi Shan, Bárbara Nazaré, Andrea Feliz, Victor E Karhel, Sydney Evans, Latora, Noel Situ, emily lam, Sid, Niccolò Frassetto, Mana, I'm here because of Knowledge Fight Facebook group., Linda Freedman and Edgardo Cuellar. Learn more about your ad choices. Visit megaphone.fm/adchoices

NOW PLAYING

How do oysters generate pearls? - Rob Ulrich

0:00 7:07

No transcript for this episode yet

We transcribe on demand. Request one and we'll notify you when it's ready — usually under 10 minutes.

La Finanza in Soldoni Massimo Famularo - Hypercast Podcast e newsletter indipendente di informazione ed educazione finanziaria.Nessuno mi paga per vendervi niente e voi non mi pagate per dirvi in cosa investire. Newsletter http://lafinanzainsoldoni.substack.com/Youtubehttps://www.youtube.com/c/MassimoFamularoBloghttps://massimofamularo.com/X(ex-Twitter)https://x.com/MassimoFamularo---Questo podcast fa parte di Hypercast Network — 📧 Per proposte commerciali scrivi a: [email protected] TED Talks Society and Culture Thought-provoking videos about life and being human, with ideas from business leaders, psychologists and researchers speaking onstage at the TED conference, TEDx events and partner events around the world. You can also download these and many other videos free on TED.com, with an interactive English transcript and subtitles in up to 80 languages. TED is a nonprofit devoted to Ideas Worth Spreading. TSOB w/ Dr. G--The Sex Ed of Blackfolk Dr. Tracie Q. Gilbert: Sexuality Educator and Podcaster T.S.O.B. with Dr. G is a weekly podcast that offers intellectual table talk about race and sexuality. Join educator and researcher Dr. Tracie Q. Gilbert as she chats with amazing sex educators, counselors, and therapists, applying a professional lens to sexiness, health and healing in the new millennium. Scar(r)ed For Life pjwrench A nostalgic, banter-full and analytical delve into all the TV shows, movies, games, books, and other media that scared (and scarred!) us s***less when we were children in the 90s. Ranging from the infamous to the obscure, from The Wizard of Oz to The Demon Headmaster, from Tomb Raider to fairytales, we’ve offer up 2 classic pieces of entertainment to reminisce and wax lyrical. Enjoy!

Frequently Asked Questions

How long is this episode of TED-Ed?

This episode is 7 minutes long.

When was this TED-Ed episode published?

This episode was published on April 28, 2026.

What is this episode about?

Explore how oysters use calcium carbonate to create pearls, and how this chemical compound creates a vast array of other materials.--Despite their iridescent colors and smooth shapes, pearls are actually made of the exact same material as the craggy...

Can I download this TED-Ed episode?

Yes, you can download this episode by clicking the download button on the episode player, or subscribe to the podcast in your preferred podcast app for automatic downloads.
URL copied to clipboard!