When did Horizon Season 10 Episode 12 air?
Horizon Season 10 Episode 12 aired on April 12, 1973.


Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
This Horizon documentary shows the work of the Cambridge Coral Starfish Research Group off of Port Sudan in the Red Sea.
Direct answers for episode-level questions and details.
Horizon Season 10 Episode 12 aired on April 12, 1973.
This episode runs for approximately 60 minutes.
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