Captain Cousteau and his ship the Calypso visit the Red Sea, the Indian Ocean and the Gulf of Aden in order to study shark behaviour and to test methods of protecting shipwreck and air crash victims from shark attacks.

THE SAVAGE WORLD OF THE CORAL JUNGLE
The team travels to the coral reefs of the Indian Ocean, an area teeming with animal and plant life, and where numerous complex relationships between different species are played out on a daily basis.

SEARCH IN THE DEEP
The island of Europa, in the Mozambique Channel between Africa and Madagascar, is the foremost breeding ground of the mysterious sea turtle. The crew s cameras follow the turtles mating rituals and the fight for survival of the newly-hatched babies.

WHALES
The Calypso divers study finback, sperm and killer whales, monitoring their migratory habits by planting small tags in their skin. Captain Cousteau also recounts the romance and legend of the great whales.

THE UNEXPECTED VOYAGE OF PEPITO AND CRISTOBAL
Captain Cousteau and the crew adopt a pair of fur seals off the Cape of Good Hope. During an Atlantic crossing the men begin to establish a relationship of trust and friendship with the mammals.

SUNKEN TREASURE
The crew sets out on a treasure hunt to the Caribbean in search of the wreck of La Nuestra Senora de la Concepcion, a Spanish ship that sank over 300 years ago carrying more than $2m in silver and gold.

THE LEGEND OF LAKE TITICACA
The divers travel inland to Peru s Lake Titicaca, testing experimental techniques for diving at high altitude for the first time. Deep in the lake they discover a unique species of frog whose lungs have atrophied like fish, they die when removed from the water.

THE DESERT WHALES
The crew of the Calypso studies the little-known California grey whale, as this once-endangered species embarks on its 5,000 mile annual breeding migration. The team observes the intimate relationships between these creatures, including mating and the feeding of a baby grey.

THE NIGHT OF THE SQUID
In the waters off southern California the Calypso happens upon the savage, yet touching, spawning ritual of the sea arrow squids of the Pacific. From their exotic mating dance to the microscopic battle for survival of the newly-hatched young, the entire cycle is captured on film by the crew.

RETURN OF THE SEA ELEPHANTS
Cousteau and his team study the life and death of the sea elephant, a massive sea mammal which returns each year to the small island of Guadalupe for ritual combat, mating and breeding. Finally, the divers discover the sea elephants secret graveyard, 25 fathoms below the waves.