The Deep-Sea Podcast

Bioluminescent Symbiosis with Margaret McFall-Ngai


Listen Later

Episode Summary

In our newest episode, Bioluminescent Symbiosis, we speak with Dr. Margaret McFall-Ngai, an animal physiologist and biochemist about her work with the Hawaiian bobtail squid (Euprymna scolopes) and its partner, the luminous bacterium Vibrio fischeri. McFall-Ngai provides a great synopsis of how this stable beneficial relationship not only creates light, and supports the bobtail maturation, but can also help us understand what could be going on in the light organs of deep-sea animals.

 

 

Check out our lovely new website where you can find more detailed notes, images and links to the wider reading.

 

 

In this episode…

Welcome back to the Deep-Sea Podcast, your punk take on all things deep sea! 

 

The Professor is jetsetting as always, back in Edinburgh after a stint getting all the equipment ready in the Canary Island and is now happily being confused with professional racecar drivers. He will be back in Perth shortly to celebrate the Deep-Sea center paper publishing streak and reconnect with his Capybara spirit animal. 

 

Thom is being called out in New Zealand Parliament, for all the right reasons, and he spent some Deep-Sea conference time in China, avoiding typhoons and pondering science ideas. 

 

We are also celebrating 300,000 podcast downloads of the podcast, and appreciate our fans immensely! 

 

Our guest this month is Dr. Margaret McFall-Ngai, an animal physiologist and biochemist who is a staff researcher at Carnegie Institution for Science’s Division of Biosphere Sciences and Engineering, with her lab stationed at the California Institute of Technology in Biology and Biological Engineering. Dr. McFal-Ngai talks us through her work on the stable beneficial relationship between the Hawaiian bobtail squid (Euprymna scolopes) and its partner, the luminous bacterium Vibrio fischeri. Although technically not a deep-sea species, this relationship and its details might help us understand how deep-sea life creates bioluminescence and the possible life cycle impacts for the creatures involved. 

 

In the news, get ready for updates on:

  • Plenty of Science and Art collaboration news including a new collective, social media feeds and an opportunity for scientists to connect with artists. 
  • Toxic Yellow worms, bright pink snailfish, and chewbacca corals.
  • An immensely important treaty ratification with worldwide impact. 
  • Headteeth, yes you read that right.
  • On the Discord, we’ve been busy with:

    • Bobtail squid fostercare
    • New Boardgame recommendations
    • Needle felting
    • New community papers and a Juicy Booty Starfish
    •  

      Support the show

      The podcast is self-sustaining (just) thanks to our lovely listeners. Thom and Alan take no money for the show. All money is put back into running it. Here’s a link to our page on how to support us, from the free options to becoming a patron of the show. We want to say a huge thank you to those patrons who have already pledged to support us:

      Sophie Bagshaw

      Laura

      Check out our podcast merch here!

       

      Feel free to get in touch with us with questions or your own tales from the high seas on:

      We’d love to actually play your voice, so feel free to record a short audio note on our brand new answerphone!

      https://www.speakpipe.com/deepseapodvoicemail

      Thanks again for tuning in; we’ll deep-see you next time!

       

      Find out more
      Social media

      BlueSky: @deepseapod.com

      Twitter: @DeepSeaPod

      Instagram: @deepsea_podcast

       

      Keep up with the team on social media

      Twitter: 

      Alan - @Hadalbloke

      Thom - @ThomLinley 

      Instagram: 

      Thom - @thom.linley 

      Inkfish - @inkfishexpeditions

      BlueSky:

      Thom @thomaslinley.com

       Alan @hadalbloke

       

      Reference list
      News 

      Links from Friends of the Show:

      Skype a Scientist

      Products | Support Skype a Scientist with the Squid Facts shop!

      Deep Sea Biology Society ArtSea Matchmaking Project

      Unseen Ocean Collective.

      Unseen Ocean Collective (@unseenoceancollective) • Instagram photos and videos

      https://bsky.app/profile/unseenocean.bsky.social

      Swedish Biodiversity Symposium, 21 - 23 October 2025

      Deep Sea Art + Science Feed on Blue Sky

       

      News

      Deep-Sea Worm Produces Orpiment, a Toxic Yellow Pigment Used in Historical Art | Scientific American

      Mānoa: Chewbacca coral: New deep-sea species spotted in waters off Hawai‘i, Mariana Trench | University of Hawaii News

      Nations ratify the world's first treaty to protect international waters

      Ghost sharks grow teeth on their heads to mate | ScienceDaily

      Descriptions of Three Newly Discovered Abyssal Snailfishes (Liparidae) from the Eastern Pacific Ocean

       

      Discord Updates

      Applying Deep Learning to Quantify Drivers of Long-Term Ecological Change in a Swedish Marine Protected Area

      Diatoms | Board Game | BoardGameGeek

      Juicy Booty Starfish

       

      Join our Patreon to get access to the Discord

       

      Interview Links

      A lasting symbiosis: how the Hawaiian bobtail squid finds and

      keeps its bioluminescent bacterial partner

      A lasting symbiosis: how Vibrio fischeri finds a squid partner

      and persists within its natural host

       

      Credits

      Logo image: Dr. Margaret McFall-Ngai

      Theme: Hadal Zone Express by Märvel

      ...more
      View all episodesView all episodes
      Download on the App Store

      The Deep-Sea PodcastBy Thomas Linley

      • 5
      • 5
      • 5
      • 5
      • 5

      5

      45 ratings


      More shows like The Deep-Sea Podcast

      View all
      This American Life by This American Life

      This American Life

      91,032 Listeners

      Radiolab by WNYC Studios

      Radiolab

      43,951 Listeners

      Wait Wait... Don't Tell Me! by NPR

      Wait Wait... Don't Tell Me!

      38,779 Listeners

      Our Fake History by PodcastOne

      Our Fake History

      3,469 Listeners

      The Daily by The New York Times

      The Daily

      112,934 Listeners

      Tides of History by Wondery /  Patrick Wyman

      Tides of History

      6,333 Listeners

      Ologies with Alie Ward by Alie Ward

      Ologies with Alie Ward

      24,362 Listeners

      Conan O’Brien Needs A Friend by Team Coco & Earwolf

      Conan O’Brien Needs A Friend

      59,267 Listeners

      Throughline by NPR

      Throughline

      16,240 Listeners

      Cautionary Tales with Tim Harford by Pushkin Industries

      Cautionary Tales with Tim Harford

      5,172 Listeners

      The Ancients by History Hit

      The Ancients

      3,261 Listeners

      The Rest Is History by Goalhanger

      The Rest Is History

      14,643 Listeners

      The Ezra Klein Show by New York Times Opinion

      The Ezra Klein Show

      16,096 Listeners

      Unexplainable by Vox

      Unexplainable

      2,316 Listeners

      What Now? with Trevor Noah by Trevor Noah

      What Now? with Trevor Noah

      4,245 Listeners