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Beginner's Guide to Scuba Diving
Lesson 4 of 12
History, Gear & How It Works
Module 1 Quiz
10 min
Question 1 of 5
20%
Cousteau and Gagnan developed the aqualung in 1943 partly as a response to a specific practical problem. Which of the following best describes what made their design a genuine breakthrough — rather than simply another diving apparatus?
It was the first device to use compressed air, replacing the pure oxygen rigs that had previously caused fatal toxicity at depth.
It delivered air on demand and at the surrounding water pressure, automatically matching each breath to the diver's depth.
It was the first fully self-contained unit, eliminating the need for a surface air pump entirely.
It used a closed-circuit system that recycled exhaled air, allowing dives to last several hours.
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