Intensive observation of gastropods, every March from the year 2008 to 2012, was carried out document some indicators gastropod extinction. The purposive sampling technic used in this work. physicochemical parameters its habitat were also monitored during done. It found that intertidal substrate consist sand, while more than 5,6 mg/L dissolved oxygen, pH around 7,0-7,2, salinity 30,2-32,2 ppt, ...