🧪 Fun night on R/V Atlantis putting red lights on DSV Alvin 4 next-day physiological experiment at Earth's deepest known submarine Hydrothermal vents, during 1st science dives after major vehicle upgrade, & a collage of resulting seabed shots. https://eos.org/science-updates/an-upgraded-alvin-puts-new-ocean-depths-within-reach 🌊 #WHOI #URIGSO #NSF #ONR #NOAA