The
Pogonophora, or beard worms, are a small group of deep sea
tube worms[?] often found growing around warm springs. The rear of the body is segmented, and together with the
Vestimentifera they have recently been regarded as a family of
annelids, called the
Siboglinidae[?], though they were earlier treated as a phylum. They appear to feed primarily on symbiotic bacteria living in their mouthless bodies. Fossils are rare. The first species was dredged from the waters of what is now
Indonesia in
1900.
