J. Peress' 1-atm dive suit, Tritonia, explored the Lusitania wreck in 1935.

From NOAA Photo Library
Image ID: nur07501, National Undersearch Research Program (NURP) Collection
Credit: OAR/National Undersea Research Program (NURP)
Source: http://www.photolib.noaa.gov/nurp/images/big/nur07501.jpg
Comment: colours changed to 256 greyscale by uploader

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