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 surface ...
Divers have discovered a centuries-old military helmet in the Mediterranean Sea—and the artifact could shed light on a previously unknown shipwreck. The helmet was spotted by three divers in the ...
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