Benthic samples were collected from Suez Gulf within the Project of Betro Gulf petrolum campany 2015; Anather coastal samples were collected from Aqaba and Suez Gulf as well as the Red Sea to study water quality, benthos and bacterial indicators for pollution 2010, Also samples were collected from rocky shore from El Max and Abu Qir stations (Alexandria) 2016. In the present study, 10 spionid species, genus: Polydora, Dipolydora, Boccardia and Pseudopolydora  were reported. Six of them are new records to Egyptian waters. Polydora cornuta Bosc, 1802, Dipolydora socialis (Schmarda, 1861),  Pseudopolydora paucibranchiata (Imajima & Hartman, 1964) and D. armata (Langerhans, 1880) are considered alein species , Polydora websteri (Hartman in Loosanoff & Engle, 1943) is considered as lessepsian migrant species, it is indo-pacific origin reported before in Red Sea and migrated through Suez Canal, and Dipolydora  protuberata (Blake & Kudenov, 1978 The importance of major setae of setiger 5 with its relation with boring and non boring activity for polydorid species are reported.