Jacques Cousteau and Emile Gagnan together invented the modern demand regulator used in underwater diving. Their invention allowed for the equipment known as the Aqualung, or self-contained underwater breathing apparatus (SCUBA), enabling safer and deeper dives.
The Aqualung was introduced in 1946 and was available on the U.S. market in 1952. It provided safe and low-cost opportunities for scientists, engineers, and underwater enthusiasts.
Cousteau, born in France, was well-known as an innovator and entrepreneur in the world of underwater exploration. He came into wide recognition with the publication of The Silent World in 1953 and the movie release in 1956, and developed into a highly recognizable figure who also spent years working on marine conservation.