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![The shallow depth to the top of Giggenbach volcano (less than 100 meters)meant that sunlight penetrated the ocean, enabling PISCES V to navigate withoutlights at times expl1828.jpg The shallow depth to the top of Giggenbach volcano (less than 100 meters)meant that sunlight penetrated the ocean, enabling PISCES V to navigate withoutlights at times](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_expl1828.jpg?itok=_eOxY_ta)
Description
The shallow depth to the top of Giggenbach volcano (less than 100 meters)meant that sunlight penetrated the ocean, enabling PISCES V to navigate withoutlights at times. A large chemosynthetic mussel community in the photosyntheticzone. (Image credit: New Zealand-American Submarine Ring of Fire 2005 Exploration; NOAA Vents Program)