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'''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.<ref>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." [http://www.waterencyclopedia.com/Ce-Cr/Cousteau-Jacques.html]</ref>
==Notes==
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