Seasons
Networks:
Watch Providers:
JustWatch makes it easy to find out where you can legally watch your favorite movies & TV shows online. Visit JustWatch for more information.
Networks:
Watch Providers:
JustWatch makes it easy to find out where you can legally watch your favorite movies & TV shows online. Visit JustWatch for more information.
First Aired: February 13, 1966
Runtime: 60 min
Horizon looks at the research of dolphins being conducted at a United States naval base in Port Magu, California. The research concentrates on the dolphin's abilities of navigation. The eminent Canadian geologist, Professor Tuzo Wilson, explains his new 'Froth on the Broth' theory of the structure of the earth to David Wilson.