SCUBA

From Conservapedia

SCUBA (or scuba) is a system of air tanks and a regulator that lets you breathe underwater. It was invented for the US military by Dr. Christian Lambersten just prior to World War II.^[1]

Four years later, improvements were made by Jacques Cousteau and French engineer Émile Gagnan (see demand regulator).

Notes

1. ↑ Dr. Christian Lambertsen designed an apparatus for the United States military in 1939 that he called the "Self-Contained Underwater Oxygen Breathing Apparatus." The military called it "SCUBA." [1]