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At the siege of Tyre, Alexander the Great was lowered in a diving bell, the first recorded use of the device in the history of scuba diving.
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German writer Tasinier, who worked for the Emperor Charles V, accompanied the Emperor to Toledo where they witnessed two Greek divers in a demonstration of a diving bell
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The German inventor Kessler introduced his diving bell with glass ports and a ballast weight for stability, but could have proven hazardous.
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A more successful diving bell is the bell invented by Edward Bendall. This is recognised in the history of scuba diving as a significant moment.
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Englishman John Lethbridge builds a "diving engine." This is an underwater oak cylinder that is surface-supplied with compressed air. At most, a diver can stay submerged for 30 minutes at 60 feet, while protruding his arms into the water for salvage work.
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German inventor August Siebe developed the first diving suit which was a copper helmet attached to a canvas and leather suit.
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In the history of scuba, the full time scuba is invented by an English-man, William James. His invention incorporates ncorporates a cylindrical belt around the diver's trunk that serves as an air reservoir, at 450 ps.
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Houdini's invention for a diver's suit permitted divers, in case of danger, to quickly divest themselves of the suit while submerged and to safely escape and reach the surface of the water.
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Emile Gagnan and Jacques Cousteau co-invented the modern demand regulator and an improved autonomous diving suit.
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Cousteau and Gagnan began selling the Aqua-Lung
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The increase in accidents as the sport became more and more popular prompted the forming of NAUI to train and certify divers.
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Equipment used during this time period includes Buoyancy Control Devices, pressure gauges and single hose regulators.
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Robert Ballard, using a remote controlled camera attached to the mother ship, finds the wreck of the Titanic
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Since the 1990’s an estimated 500 000 new divers are certified every year
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Today, SCUBA continues to develop, as new technology is rapidly being created.
