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Cirratulus cirratus
''Cirratulus cirratus'' is a species of marine polycheate worm in the family Cirratulidae. It occurs in the littoral and sub-littoral zones of the Atlantic Ocean.
Polychaetes, or marine bristle worms, have elongated bodies divided into many segments. Each segment may bear setae (bristles) and parapodia (paddle-like appendages). Some species live freely, either swimming, crawling or burrowing, and these are known as "errant". Others live permanently in tubes, either calcareous or parchment-like, and these are known as "sedentary".
==Description==
''C. cirratus'' grows to up to thirty centimetres long with up to 150 segments. It has a slender, orange, pinkish or brownish body. The prostomium or head is a blunt cone with a row of 4 to 8 large black eyes on either side. The first segment bears two groups of up to eight feeding tentacles. At intervals along the body there are pairs of long slender gills which look like a mass of reddish threads.〔(Marine Life Information Network )〕 Short, blunt bristles are found on segments 10 to 12 and more on segments 20 to 23.〔(Marine Species Identification Portal )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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