The Atlantic surf clam (''Spisula solidissima''), also called the bar clam, hen clam, skimmer or simply sea clam, is a very large, edible, saltwater clam or marine

bivalve Bivalvia (), in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class of marine and freshwater molluscs that have laterally compressed bodies enclosed by a shell consisting of two hinged parts. As a group, biv ...

mollusk Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is es ...

in the family Mactridae. It is commonly found in the western

Atlantic Ocean The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It covers approximately 20% of Earth#Surface, Earth's surface and about 29% of its water surface area. It is known to separate the "Old World" of Afr ...

. Reaching up to or more in length, it is much larger than '' Spisula solida'', which resides in the eastern Atlantic coastal waters. The shell of this species is a well-known object to beach-goers in the northeastern

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., federal district, five ma ...

. People on the beach often pick up a large empty shell of this species, either to dig in the sand with, or take home to use as a decorative dish or

ashtray An ashtray is a receptacle for ash from cigarettes and cigars. Ashtrays are typically made of fire-retardant material such as glass, heat-resistant plastic, pottery, metal, or stone. It differs from a cigarette receptacle, which is used spec ...

. The species is exported commercially as a food item.

Distribution

This common species occurs off the east coast of North America from

Nova Scotia Nova Scotia ( ; ; ) is one of the thirteen provinces and territories of Canada. It is one of the three Maritime provinces and one of the four Atlantic provinces. Nova Scotia is Latin for "New Scotland". Most of the population are native En ...

South Carolina )'' Animis opibusque parati'' ( for, , Latin, Prepared in mind and resources, links=no) , anthem = "Carolina";" South Carolina On My Mind" , Former = Province of South Carolina , seat = Columbia , LargestCity = Charleston , LargestMetro = G ...

. It has also been introduced and farmed in Hokkaidō, northern Japan.

Habitat

Atlantic surf clams live buried in coarse or fine sand. They live offshore as well as in the low

intertidal The intertidal zone, also known as the foreshore, is the area above water level at low tide and underwater at high tide (in other words, the area within the tidal range). This area can include several types of habitats with various species ...

and

surf zone As ocean surface waves approach shore, they get taller and break, forming the foamy, bubbly surface called ''surf''. The region of breaking waves defines the surf zone, or breaker zone. After breaking in the surf zone, the waves (now reduced in ...

Life habits

Surf clams can take as little as three months to reach maturity off the

New Jersey New Jersey is a U.S. state, state in the Mid-Atlantic States, Mid-Atlantic and Northeastern United States, Northeastern regions of the United States. It is bordered on the north and east by the state of New York (state), New York; on the ea ...

coast, or as long as four years off

, and can reach an age of 31 years. These clams use their siphons to pull in and then filter fine particles of organic matter and

plankton Plankton are the diverse collection of organisms found in water (or air) that are unable to propel themselves against a current (or wind). The individual organisms constituting plankton are called plankters. In the ocean, they provide a cr ...

from the surrounding seawater. Like almost all clams, they are filter feeders. Spisula solidissima juv

Human use

This species is a commercially exploited species, long prized for its sweet flavor. This species is typically harvested from fishing vessels known as dredgers, which use a specialized fishing dredge equipped with high-power hydraulic jets designed to fluidize the sea floor so as to loosen clams from the sediments before it scoops them up. About two-thirds of a surf clam's shucked weight is viable for human consumption. The meat of the clam is used as 'strips',

chowder Chowder is a thick soup prepared with milk or cream, a roux, and seafood or vegetables. Oyster crackers or saltines may accompany chowders as a side item, and cracker pieces may be dropped atop the dish. New England clam chowder is typicall ...

, and

sushi is a Japanese dish of prepared , usually with some sugar and salt, accompanied by a variety of , such as seafood, often raw, and vegetables. Styles of sushi and its presentation vary widely, but the one key ingredient is "sushi rice," also ...

. The "tongue" or foot of the clam is commercially valuable because it is cut into long strips which are breaded and fried and served as clam strips, first popularized by the

Howard Johnson's Howard Johnson's, or Howard Johnson by Wyndham, is an American hotel chain and former restaurant chain. Founded by Howard Deering Johnson in 1925 as a restaurant, it was the largest restaurant chain in the U.S. throughout the 1960s and 1970s, ...

franchise. The meat that is left over is separated from the "belly" and is referred to as "salvage" within the clam industry. This meat includes the adductor muscles, which are the strong muscles that close the two halves of the shell and which tightly hold the clam's shell in the shut position. "Salvage" is typically ground up for use in chowders, sauces, and dips, and is commercially available either in cans or frozen. Locally it is available fresh. The substantial "belly" of the clam is used by some fishermen as bait for

striped bass The striped bass (''Morone saxatilis''), also called the Atlantic striped bass, striper, linesider, rock, or rockfish, is an anadromous perciform fish of the family Moronidae found primarily along the Atlantic coast of North America. It has ...

and other species.

References

{{Taxonbar, from=Q3017199 Mactridae Marine molluscs of North America Molluscs of the Atlantic Ocean Molluscs of the United States Fauna of the Northeastern United States Fauna of the Southeastern United States Bivalves described in 1817 Edible molluscs