Alitta virens

Alitta virens
Scientific classification
Kingdom:	Animalia
Phylum:	Annelida
Class:	Polychaeta
Subclass:	Aciculata
Order:	Phyllodocida
Family:	Nereididae
Genus:	Alitta
Species:	A. virens
Binomial name
	Alitta virens; (M. Sars, 1835)
Synonyms
	Nereis virens M. Sars, 1835; Neanthes virens (M. Sars, 1835); Nereis paucidentata Treadwell, 1939 ; Nereis dyamushi Izuka, 1912 ; Nereis grandis Stimpson, 1854 ; Nereis southerni Abdel-Moez & Humphries, 1955 ; Nereis yankiana Quatrefages, 1866 *;

Alitta virens (common names include sandworm and king ragworm; older scientific names including Nereis virens are still frequently used) is an annelid worm that burrows in wet sand and mud. It is classified as a polychaete in the family Nereididae.^[1]

Sandworms make up a large part of the live sea-bait industry. To fulfill the needs of this industry, some sandworms are commercially grown.^[2] "Sandworming", or the harvesting of sandworms from mudflats, employs over 1,000 people in Maine. As of 2006^[update], the population of sandworms had diminished greatly over the preceding few years due in large part to overharvesting before the worms are able to reproduce by spawning.^{[citation needed]}

Sandworms eat seaweed and microorganisms. They have many distinctive traits, including

often reaching great lengths, sometimes exceeding four feet
numerous, highly vascularized parapodia along both sides of their bodies
blue heads with two large pincer teeth which are capable of biting humans^[3]

The parapodia function both as external gills (the animal's primary respiratory surfaces), and as means of locomotion (appearing much like short legs).^{[citation needed]}