Sea worm on arvau

Wikipedia / Sea worm

Sea worm, also spelt seaworm, may refer to one or several of the following taxa:

Taxonomic name	Type	Description	Size (length)
Annelida	phylum	segmented worms	ranges from microscopic to
Aplacophora	Sub-phylum	molluscs that look like worms	a few millimeters to several centimeters
Chaetognatha	phylum	arrow worms
Cycliophora	phylum	found living attached to the bodies of lobsters	less than ½mm wide
Entoprocta	phylum	sessile aquatic worms	ranges from
Gastrotricha	phylum	pseudocoelomate worms
Gnathostomulida	phylum	jaw worms
Hemichordata	phylum	deuterostome worms	a few centimeters to 2,5 meters
Kinorhyncha	phylum	pseudocoelomate invertebrates, widespread in mud or sand at all depths	1mm or less
Loricifera	phylum	sediment-dwelling worms	100μm to ca.1mm
Micrognathozoa	superphylum	discovered living in homothermic springs
Nematoda	phylum	round wormss	ranges from microscopic to , and some parasitic ones reaching over
Nematomorpha	phylum	parasitic worms
Nemertea	phylum	invertebrate ribbon worms	most are less than long, one specimen has been estimated at
Phoronida	phylum	horseshoe worms	, the largest are
Platyhelminthea	phylum	flatworms
Priapulida	phylum	penis worms, general shape may recall the shape of a penis
Sipuncula	class	peanut worms, a group of unsegmented marine annelids
Teredinidae	family	shipworms, which are marine bivalve molluscs	several inches to five feet.
Xenoturbellida	subphylum	bilaterian worm-like species	up to