Siliqua patulais commonly referred to as Pacific Razor Clam, Northern Razor. Difficulty in the aquarium: There are no reports available yet that this animal has already been kept in captivity successfully. Toxicity: Toxic hazard unknown.
The long, narrow shell S. patula may attain a length greater than 7 inches. In very young specimens, the periostracum, or outermost tissue-like layer of the shell, is brown. It gradually becomes yellowish-brown in medium-sized animals and changes again to brown with age.
Razor clams feed primarily on one type of plankton.