The shallow depth to the top of Giggenbach volcano (~100 m) meant that sunlight penetrated the ocean, enabling Pisces V to navigate without its lights at times. Image courtesy of New Zealand-American Submarine Ring of Fire 2005 Exploration, NOAA Vents Program.
Related Links
New Zealand American Submarine Ring of Fire 2005
New Zealand American Submarine Ring of Fire 2005: April 18 Log