Sea pens or pennatulaceans are a highly specialized group of anthozoan coelenterates. They are bentic sessile animals. Sea pens were collected by wading at low tide in inter tidal zone From Bandar Abass Costal area in autumn 2009.Sea pens were studied by morphologically trails as well as espiculs . Sea pens identified by classification keys and also acid digestion method, and samples were sent to academic center of California for conferm ation. Comparing identification keys genus from Virgularidae family was identified, it consisted of Virgularia gustaviana . Sea pen,s distribution showed a patchy form in the intertidal zone. Sea pen,s biomass was determed to be 10.77 g/m2 in Souru Estuary. Sea pens contain large quantities of lipids in their tissues; these lipids may be either structural or for storage .in this study, lipid percentages of Virgularia gustavianawere measured and percentage of sterol profile was assessed. Total lipid of Virgularia gustaviana was 21.96 percent and sterol profile which was5680.31mg/kg contain cholesterol 1910.38mg/kg that equal57.95 percent of total sterol and brassicasterol ,campestrol ,campestanol ,stigmasterol ,beta-sitosterol were measured. Fatty acid profiles was measurd by GC-Mass and Heptadecan 44.25 % beta.-Bisabolene ss Cyclohexene'1,18.16 %, and Metyl arachidonate 54.17 % was assessed. This research is first step in sea pen identification and it,s lipid components in Iranian coastal waters of Persian Gulf.
n was higher than preadults and adults. The measurement of liver total lipid showed that preadult lipid was more than adult and immature. Calcium staining in both liver and ovary tissues expressed that this element will increase during growth and development.
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