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 ýý(Echinodermata, Echinoidea) is given from Iranian waters. Nine Species of Echinoderms were ýidentified through the study. The species identification was made using morphological ýcharacteristics and review of checklist key. Nine species were identified here, including ýEchinometra mathaei, Prionocidaris baculosa, Temnopleurus toreumaticus, Echinothrix ýcalamaris, Clypeaster humilis, Echinodiscus auritus, Diadema setosum, Diadema savignyi and ýParasalenia gratiosa of which three species namely Echinothrix calamaris, Diadema savignyi ýand Parasalenia gratiosa were new records to Persian Gulf.ý