Razor clam

From Freepedia

The Pacific Razor clam (Siliqua patula) is a bivalve mollusk with an elongated oblong narrow shell which ranges from 3 to 6.25 inches in length. They can be found along the Pacific West Coast from Eastern Aleutian Islands, Alaska, to Pismo Beach, California. The American East Coast example of a Razor Clam is The Atlantic Razor Clam (Siliqua costata). This species resembles its Pacific counterpart, but does not grow as large. Another eastern species ensis directus (sometimes referred to as a "Razor Clam," but better known as the "Atlantic Jackknife Clam") is found from Cape Cod to Florida and can reach ten inches in length.