Ocean engineering and technology company DEEP is on a mission to make humans aquatic, which is why it’s setting up an underwater training facility in Chepstow.
The 50-acre site, with a controlled body of water, will be dedicated to saturation diving – a technique that allows people to live and work underwater for longer.
BBC Tech Now’s Andrew Rogers visits the former quarry where new technology is being tested.
Video journalist: Grace Ekpu.
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