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Jacques-Yves Cousteau

✨ 1910–1997, Oceanography and exploration

Jacques-Yves Cousteau (1910–1997) was a French naval officer, ocean explorer, filmmaker and inventor who helped make the underwater world accessible to a wide audience. Born in Saint-André-de-Cubzac, France, he entered the French Naval Academy in 1930 and later became interested in underwater exploration. In 1943, working with engineer Émile Gagnan, he co-developed the Aqua-Lung, a demand-regulated breathing system that allowed divers to move more freely underwater without being connected to the surface by an air hose.

This invention played an important role in the development of modern scuba diving. After the Second World War, Cousteau combined exploration, scientific research and filmmaking to document marine environments and share them with the public. His expeditions examined coral reefs, marine animals, underwater archaeology and the effects of human activity on the oceans. In 1950, Cousteau took command of the Calypso, a former minesweeper that was transformed into an oceanographic research vessel.

For decades, the ship served as a base for expeditions, underwater filming and scientific work around the world. His 1956 film The Silent World, made with Louis Malle, won the Palme d’Or at Cannes and helped bring underwater exploration to international audiences. Through books, films and television programs, Cousteau also drew attention to pollution, overfishing and the need to protect marine ecosystems.

In 1973, he founded the Cousteau Society, an organization dedicated to ocean exploration and conservation. He continued developing technologies for underwater research, including cameras, submersibles and experimental underwater habitats. Cousteau died in Paris in 1997. His legacy combines technological innovation, marine exploration, public education and an early, influential commitment to protecting the oceans.

💡 Did you know?

Breathe like a fish. Did you know that before Cousteau, divers were heavy and connected to the surface by an air hose? They could not move freely. Jacques-Yves invented a magic valve called a 'regulator'. By attaching it to a compressed air tank on his back, he became the first true fish-man!

The ship Calypso. Cousteau bought an old warship for very little money and transformed it into a floating laboratory. There was even a small submarine on board and an observation room with portholes under the water! The Calypso became home to the whole team during their adventures around the world.

The legendary red cap. In every image of Cousteau, we see his eternal red cap. Do you know why? It was once the cap worn by former deep-sea divers. By wearing it all the time, he paid tribute to the pioneers of the sea. It is today one of the most famous objects of exploration!