Razor clam is a common name for long, narrow, saltwater clams, including:Atlantic jackknife clam, Ensis leei Gould's razor shell, Solen strictus Pacific razor clam, Siliqua patula Pinna bicolor, a species of large saltwater clam in the family Pinnidae Razor shell, Ensis magnus Rosy razor clam, Solecurtus strigilatus Siliqua alta, the northern or Arctic razor clam Siliqua costata, Atlantic razor clam Solen marginatus, the grooved razor shell Sinonovacula constricta, the Chinese razor clam