For deep-diving mixed-gas divers, it's far worse. Routinely diving below 130 ft (40 m), the divers are always in pitch darkness, relying on work and helmet lights, and they are tethered to the ...

For decades, divers had to wear bulky canvas suits with massive metal helmets, 60 pound lead belts, ... Vintage photos show how deep sea diving and exploration has evolved over the years.

A 1920s- 1930s professional underwater deep sea diver in diving suit with breathing gas supply and hard hat helmet. (Photo by H. Armstrong Roberts/ClassicStock/Getty Images) ...

MILWAUKEE -- Chip spent the morning at Diving Equipment & Supply Company (DESCO). They make old fashioned deep sea diving helmets. The helmets they make are used in movies -- and Desco is a ...

Our friends at Oobject have assembled 12 of the toughest examples of deep-sea diving suits around—from da Vinci’s cloth prototypes to the bell helmets made famous by countless Scooby-Doo villains.

Deep sea diving is a complex operation that's incredibly wasteful when it comes to the helium/oxygen gas mixture that the divers breathe. That's why US Navy scientists at the Naval Surface Warfare ...