When did Horizon Season 2 Episode 11 air?
Horizon Season 2 Episode 11 aired on June 9, 1965.


Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Horizon looks at Prof. Perry Gilbert's research on captured sharks and meets with the eminent physiologist Sir Henry Dale as he celebrates his 90th birthday and looks back on his career in medical research. The eminent physiologist, who celebrates his ninetieth birthday today, looks back on his first discovery sixty years ago.
Direct answers for episode-level questions and details.
Horizon Season 2 Episode 11 aired on June 9, 1965.
This episode runs for approximately 60 minutes.
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