In the past deep sea divers had suits with heavy helmets and an

Deep impact: New diving suit could increase undersea range of Navy divers

Where can I buy an old metal diving suit with large helmets? - Quora

If a hypothetical suit for diving as far deep as Challenger Deep existed, what must it be able to withstand? - Quora

How deep could someone dive breathing air through an unblockable tube to the surface? - Quora

11 Important Steps in the Evolution of Diving Suits - Interesting Engineering

How did old-time divers using the air suits with metal helmets get back to the surface if their equipment was so heavy? - Quora

Why do deep sea divers dive backwards from a boat while carrying breathing equipment? - Quora

Helmet diving suit hi-res stock photography and images - Alamy

1,868 Old Diving Suit Images, Stock Photos, 3D objects, & Vectors

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Assuming a diving suit could be constructed to withstand the pressure at the bottom of the Marianna Trench, air included, would a person be able to walk under their own power? One