Photo 7 of 9

View all

Tri-Valley woman returns from deep sea exploration
These tube worms (known scientifically as "Riftia") reside alongside the hydrothermal vents studied during Runyan's Nautilus expeditions. They lack a mouth or stomach, but host bacteria in their guts that then convert chemicals from the vents into food for the worms. (Photo by OET/NautilusLive)

© 2018
All rights reserved.