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https://www.noaa.gov/media/digital-library-photo/pl23nur08005jpgDescription
The main chamber of HELGOLAND was known as the pregnant elephant. (Image credit: OAR/National Undersea Research Program (NURP))
Credit
OAR/National Undersea Research Program (NURP)
Display Date
1975 September
Collection
Voyage to Inner Space
National Undersea Research Program (NURP) Collection
Undersea Technologies
Undersea Labs (Habitats) & Observatories
Keywords
Undersea Technologies
Undersea Labs (Habitats) & Obs