S7·E22 Crown of Thorns
Core
Aired August 31, 1970 60 min
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Synopsis
The population explosion of the Crown of Thorns starfish is investigated by Horizon.
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Frequently Asked Questions
When did Season 7 Episode 22 of Horizon air?
Season 7, Episode 22 ('Crown of Thorns') originally aired on August 31, 1970.
How long is Season 7 Episode 22 ('Crown of Thorns')?
The runtime for this episode is approximately 60 minutes.
What happens in Horizon Season 7 Episode 22?
The population explosion of the Crown of Thorns starfish is investigated by Horizon....
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