ORIGINAL: witpqs
ORIGINAL: BrucePowers
By the way I didn't realize diving was a big sport yet. I don't believe Mr. Cousteau has invented scuba gear yet[:D]
SCUBA existed already, he invented the re-breather.
SCUBA (Aqualung) not invented until 1943 by Cousteau and Emile Gagnan. Rebreathers existed before this, but were pretty dangerous to use.
EDIT: Rebreather systems around from the 1600s (!!) Self contained ones for single divers since the 1800s, but they got going a bit more in the 1930s in Italy. The Italian navy used them, and the Brits captured some and modified them. The USN also had a rebreather in the early 1940s. Easy to die using rebreathers, though. They worked by reabsorbing carbon dioxide, but if something goes wrong, the user rapidly goes unconscious due to the toxic effects of CO2.
RE-EDIT: Some rebreathers were originally known as SCUBA, but the term eventually got usurped by the open circuit (Aqualung) design.