🛠️ Invention or technique

Aqua-Lung (open-circuit scuba)

Escafandra autónoma (Aqua-Lung)

Date
1943 · confidence high
Place
Paris, France
Credited to
Jacques-Yves Cousteau and Émile Gagnan
Field
Tools

What it is

Naval officer Cousteau and engineer Gagnan designed a regulator that automatically supplies air from a pressurized cylinder, only when the diver inhales and at the exact pressure of the surrounding water, solving the problem of manually regulated diving helmets. The "aqua-lung" made modern untethered scuba diving possible, without cables or rigid helmets.

What it led to

  • Modern recreational and scientific diving
  • Cousteau's underwater documentaries (The Silent World)
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Sources✓ verified 2026-09-28