Skip to content
Artwork for The Deep-Sea Podcast
The Deep-Sea Podcast · Nov 15, 2025 · 37 min

PRESSURISED: 063 – Bioluminescent Symbiosis with Margaret McFall-Ngai

Welcome to the PRESSURISED version of episode 63, just the science, none of the waffle PRESSURISED: Bioluminescent Symbiosis with Margaret McFall-Ngai | The Deep-Sea Podcast | Episode 63 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. Glossary Crypt - The chambers within the squid's light organ. 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: podcast@deepseapod.com 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 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

0:00-37:49

transcript

No transcript — this publisher did not publish one.

show notes

Welcome to the PRESSURISED version of episode 63, just the science, none of the waffle

PRESSURISED: Bioluminescent Symbiosis with Margaret McFall-Ngai | The Deep-Sea Podcast | Episode 63

 

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. 

 

Glossary

Crypt - The chambers within the squid's light organ.

 

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:

podcast@deepseapod.com

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 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

links16