There are several kinds of marine worms. In the phylum, Annelida, the class Polychaeta are common marine worms. There are, however, some tube-dwelling worms that are found in the phylums, Vestimentifera and Pogonophora.
Of the phylum, Vestimentifera:
Giant white tubeworm (Apomatus sp.)
Another tube worm:
Slime tube worms (Protula pacifica, Myxicola sp.)