Horizon
tv show
1170 total episodes
-
61 seasons
First Aired February 04, 1964
Genres:
Overview
Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Crown of Thorns poster unavailable
Crown of Thorns
Season 7 - Episode 22 - 1h 0m
Air Date
August 31, 1970
Overview
The population explosion of the Crown of Thorns starfish is investigated by Horizon.