Is a fire worm free living?

Fire worms, specifically those belonging to the genus Eurythoe, are not free-living; they are typically found in marine environments, often residing in coral reefs or on rocky substrates. They are a type of bristle worm and are known for their brightly colored bristles, which can cause a painful sting if touched. They play a role in the ecosystem by scavenging and feeding on detritus. Overall, while they are not free-living in the sense of being completely independent, they do exhibit a free-swimming lifestyle at certain life stages.