
Aqua-Lung gained worldwide popularity and commercial success as the first self-contained, opencircuit underwater breathing apparatus. This equipment is also called the twin-hose diver regulator, or the demand valve. Aqua-Lung's breathing apparatus works in a similar way to a traditional scuba tank. The regulator is connected with a demand valve that regulates the flow and pressure of the air into the lungs.
Jacques Cousteau
Jacques Cousteau's aqua lung - A fascinating tale in Scuba Technology! The invention of the original Aqua-Lung occurred during World War II. Cousteau, who was a French national, invented the underwater breathing apparatus in 1943. He was inspired by a 1925 invention by Captain Yves Le Prieur. Although initially the Aqua-Lung could only perform limited functions, the Germans ordered automobile gas for use on the battlefield. Adapting an existing regulator, Cousteau developed the Aqua-Lung and eventually invented the autonomous diving system.

Cousteau was instrumental in the development of scuba technology and discovered underwater archeology. He led the first self-contained diving expedition in 1946 and recovered the Roman shipwreck Mahdia. The next year, he made a British minersweeper an oceanographic research ship. Unfortunately, he struggled to raise the funds for the expeditions and he eventually turned his passion for diving into a book called The Silent World, which became a successful film.
Aqua-Lung, the most significant innovation in scuba dive is Aqua-Lung. It was designed by Jacques Cousteau in 1959 and allows divers to safely and comfortably swim below water. The Aqua lung has been a popular tool, and Cousteau is responsible for the creation of many other tools that allow for oceanographic exploration. Cousteau actually invented the first underwater cameras in 1959. Cousteau's innovations have revolutionized scuba diving.
Emile Gagnan
1945: Emile Gagnan (Jacques Yves Cousteau) and Emile Gaugnan (Emile Gagnan) patent the Aqua-Lung diving regulation. Aire Liquide was a French company that purchased the right to manufacture the regulator. It was later sold to the U.S. Divers Corporation. This regulator was the latest innovation of the French CG45 regulator, and it was made in Canada. This regulator proved to be extremely successful.
Initially, the Aqualung was known as the Aqualung. It was sold first in France in 1946. The Aqua-lung was later brought to America in 1952. In 1958, Air Liquide purchased U.S. Air Liquide purchased U.S. Divers in 1958 and changed its name to Aqua Lung America. Air Liquide became a division of the company, making it the world's largest diving business. Aqua-lung has become a major component of almost every set Scuba gear.

The Aqua-Lung was invented by two Frenchmen: Emile Gagnan and Jacques Cousteau. Both men were spymen for the French Resistance during World War II. After the war, Robert Ballard continued to pursue his interest in the sea. Emile Gagnan became his partner in crime, and he was working at L'Air Liquide as a Frenchman. They were both engineers and learned how high-pressure pneumatic design works. Gagnan’s idea was realized into an fully-automated, compressed-air system for scuba diving called Aqua-Lung.