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The Undersea World of Jacques Cousteau

Season 1 · Episode 20

A sound of dolphins

0.050mFebruary 25, 1972

The crew isolates a pair of dolphins to study the species' remarkable sonar system.

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Episodes

Episode 1Sharks
Episode 2Savage World of the Coral Jungle
Episode 3Search in the deep
Episode 4Whales
Episode 5The Unexpected Voyage of Pepito and Cristobal
Episode 6Sunken Treasure
Episode 7The Legend of Lake Titicaca
Episode 8The Desert Whales
Episode 9The Night of the Squid
Episode 10Return of the Sea Elephant
Episode 11Those Incredible Diving Machines
Episode 12The Water Planet
Episode 13Tragedy of the Red Salmon
Episode 14Lagoon of Lost Ships
Episode 15The Dragons of Galapagos
Episode 16Secrets of the Sunken Caves
Episode 17The Unsinkable Sea Otter
Episode 18The Forgotten Mermaids
Episode 19Octopus, Octopus
Episode 20A sound of dolphins
Episode 21A smile of the walrus
Episode 22500 million years beneath the sea
Episode 23Hippo!
Episode 24The singing whale
Episode 25South to fire and ice
Episode 26The flight of penguins
Episode 27Beneath the frozen world
Episode 28Blizzard at Hope Bay
Episode 29Life at the end of the world
Episode 30Beavers of the north country
Episode 31The coral divers of Corsica
Episode 32The sleeping sharks of Yucatan
Episode 33The sea birds of Isabella
Episode 34Mysteries of the hidden reefs
Episode 35The fish that swallowed Jonah
Episode 36The incredible march of the spiny lobsters