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) is 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.‎