 The diamond stingray ( Dasyatis dipterura ) is a species of stingray in the family Dasyatidae . It is found in the coastal waters of the eastern Pacific Ocean from southern California to northern Chile , and around the Galápagos and Hawaiian Islands . This bottom @-@ dweller generally inhabits sandy or muddy flats near rocky reefs and kelp forests , to a depth of 30 m ( 98 ft ) , though off Hawaii it may range considerably deeper . As its common name suggests , this species has an angular , diamond @-@ shaped pectoral fin disc that is plain brown or gray above , with rows of tubercles along the midline and on the " shoulders " . The long , whip @-@ like tail has both dorsal and ventral fin folds , which distinguish this ray from the closely similar longtail stingray ( D. longa ) . It typically grows to 1 m ( 3 @.@ 3 ft ) across . 
 The diamond stingray ( Dasyatis dipterura ) <a href='drop_aux' title='1'><mark>is</mark></a>a species of stingray in the family Dasyatidae . It is found in the coastal waters of the eastern Pacific Ocean from southern California to northern Chile , and around the Galápagos and Hawaiian Islands . This bottom @-@ dweller generally <a href='uninflect' title='2'><mark>inhabits</mark></a> sandy or muddy flats near rocky reefs and kelp forests , to a depth of 30 m ( 98 ft ) , though off Hawaii it may range considerably deeper . As its common name <a href='uninflect' title='3'><mark>suggests</mark></a> , this species <a href='uninflect' title='4'><mark>has</mark></a> an angular , diamond @-@ shaped pectoral fin disc <a href='null_relcl' title='5'><mark>that</mark></a><a href='drop_aux' title='6'><mark>is</mark></a>plain brown or gray above , with rows of tubercles along the midline and on the " shoulders " . The long , whip @-@ like tail <a href='uninflect' title='7'><mark>has</mark></a> both dorsal and ventral fin folds , which distinguish this ray from the closely similar longtail stingray ( D. longa ) . It typically <a href='uninflect' title='8'><mark>grows</mark></a> to 1 m ( 3 @.@ 3 ft ) across . 
Da diamond stingray ( Dasyatis dipterura ) a species of stingray in tdafamily Dasyatidae . It is found in the coastal waters of the eastern Pacific Ocean from southern cali to northern Chile , and around thdaalápagos and Hawaiian Islands . dis bottom @-@ dweller generally inhabit sandy or muddy flats near rocky reefs and kelp forests , to a depth of 30 m ( 98 ft ) , though off Hawaii it may range considerably deeper . As its common name suggest , this species have an angular , diamond @-@ shaped pectoral fin disc plain brown or gray above , with rows of tubercles along the midline and on the " shoulders " . Thedang , whip @-@ like tail have both dorsal and ventral fin folds , which distinguish this ray from the closely similar longtail stingray ( D. longa ) . It typically grow to 1 m ( 3 @.@ 3 ft ) across .