What symbiosis is the Pompeii worms?

Pompeii worms exhibit a mutualistic symbiOSis with specific types of bacteria. These worms live in extreme hydrothermal vent environments and rely on the bacteria for nutrition, as the bacteria oxidize sulfide from the vent water. In return, the worms provide a habitat for the bacteria within their specialized gills, creating a stable environment for their growth. This relationship allows both organisms to thrive in harsh conditions.