Tubeworms grow near the boundary of where the hot vent fluid mixes with the cold
seawater. These strange creatures can grow over 2.4 meters (8 feet tall). Tubeworms
lack a mouth or stomach and instead have billions of symbiotic bacteria living
in their red plumes. The tubeworm helps collect chemicals that the bacteria need
from the water, and the bacteria convert it into sugars that the tubeworm can
use for energy.