Donax clams are an abundant species on the beaches of North Carolina and reports suggest the occurrence of multiple species. This study uses both morphometric and genetic analysis of specimens collected from four different locations at three different depths to clarify the species composition and distribution on Wrightsville Beach, North Carolina. A total of 12 clams were collected by benthic coring at three depths at each of four sites. Abundance differed significantly between sites with over 50% of the clams being collected from a single site. Clams were more abundant in the swash zone relative to the subtidal depths (knee and waist deep water) . Using the diagnostic characteristics of shell angle and the relationship between shell width and shell length, morphometric analysis supported the finding that there is only one species present on Wrightsville Beach. The angle measurement had a calculated mean of 129.3° which was very close to reported values for Donax variabilis. Regression analysis of shell width length and height relationships also suggested the presence of a single species. Genetic analysis of the mitochondrial 16s gene revealed a small level of nucleotide diversity. Twenty-three samples were sequenced and 415 base pairs compared. Three sites were polymorphic and one site exhibited an insertion/deletion. Comparison of the 23 sequences revealed the presence of four haplotypes. Nucleotide sequence diversity was estimated to be well within the range reported for populations of a single species. The results of these analyses suggest the presence of a single species on Wrightsville Beach, NC.