The Deep-Sea Podcast17 Jul 2025

PRESSURISED: 060 – Mesophotic Reefs with Yi-Kai Tea

Welcome to the PRESSURISED version of episode 60, just the science, none of the waffle PRESSURISED: Mesophotic Reefs with Yi-Kai Tea | The Deep Sea Podcast | Episode 60

In this month's episode, we discuss mesophotic reefs, the deeper extents of coral reefs that have been overlooked in the past. It’s a wild ride that leads us to homemade hyperbaric chambers, the aquarium trade and the world’s most expensive fish. Strap in for a rollercoaster ride as we dive to the limits of scuba.

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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

Reference list

Mesophotic fish collecting video

Taken by Ghislain Bardout from Under The Pole. The diver is Timothy Bennett, and he was collecting for the Australian Museum Research Expedition.

One of Kai’s recent mesophotic reef papers

The hyperbaric chamber for fishes

The paper where the chamber is described

The peppermint Angelfish

Kai’s video of the peppermint angel

Teresa’s project

Her recent paper on black corals

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Glossary

BRUV - Baited Remote Underwater Video
Closed-circuit rebreather - An advanced form of scuba where your breath is recycled, and you don’t make any bubbles
Husbandry - Keeping an animal in captivity
IPFC - Indo-Pacific Fish Conference
Marine Snow - The particles that rain down to the seabed; poop, dead things, cast shells
Mesophotic Reef - The deeper extent of coral reefs where the light is reduced
Rebreather - See Closed-circuit rebreather
ROV - Remotely Operated Vehicle
Systematics - The structure and relationships between species

Credits

Theme: Hadal Zone Express by Märvel

Logo image: The peppermint angel by Yi-Kai Tea

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