Uploaded August 2026 | Updated September 2026, 2 weeks ago

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Could life survive in oceans that eat glass and treat water as poison? Explore fluorine-rich biology, hydrogen fluoride seas, and alien creatures whose metabolisms resemble carefully contained rocket engines.

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Credits:
Fluorine Lifeforms – Creatures of the Halogen Seas
Written, Produced & Narrated by: Isaac Arthur
Music by Epidemic Sound: nebula.tv/epidemic
Chris Zabriskie
Select imagery/video supplied by Getty Images

Chapters
0:00 Intro
5:16 Fluorine in the Toolbox
10:14 The Halogen Sea
17:35 Rocket-Engine Biology & Fluorine Dragons
23:11 Worlds, Weather, Detection, and Civilization
28:16 TierZoo
29:24 Life Under Armed Guard