Contribution to the knowledge of echinoid fauna from Persian Gulf (Echinodermata: Echinoidea

Species identification is always important. records of sea urchins and sand dollars species (echinodermata, echinoidea) are given from iranian waters. nine species of echinoderms were identified through the study. the species identification was made using morphological characteristics and review of checklist key. nine species were identified here, including echinometra mathaei, prionocidaris baculosa, temnopleurus toreumaticus, echinothrix calamaris, clypeaster humilis, echinodiscus auritus, diadema setosum, diadema savignyi and parasalenia gratiosa of which three species namely echinothrix calamaris, diadema savignyi and parasalenia gratiosa were new records to persian gulf.