Final safety checks are carefully run through before the ALVIN submersible
descends to the seafloor. The research vessel ATLANTIS II and the ALVIN crew
often spend 8 months per year at sea.
Image ID: expl1871, Voyage To Inner Space - Exploring the Seas With NOAA Collect Photo Date: 2006 May 21 Credit: Expedition to the Deep Slope/NOAA/OER
