Season 5 · Episode 22 of 24
Aired Dec 12, 1968
The Hidden World
Thu, Dec 12, 1968
Streaming on PBS
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In this episode, Horizon reports on the exploration and survey of the oceans of the world.
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Airs
Thu, Dec 12, 1968
Show
Horizon
1174 episodes
Episode
S5 · E22
in Horizon