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[citation needed] The screws go under the frame (work-piece) to be held, and the bit clamps down on the lower-edge of the frame. [citation needed] Recent designs are more complicated; a rigid body holds one fixed and one moveable jaw activated by a cam. [citation needed] An example of newer clamps is Jim Chestnut's Clam Clamp. [8]
As well as being eaten by humans, the soft-shelled clam is relished by sea otters in the eastern Pacific Ocean, [citation needed] where the clam is an invasive species. In New England the soft-shell clam is preyed heavily upon by northern moon snails and invasive green crabs. They are also a favorite of gulls, which pull the clam from the sand ...
Nuttallia obscurata, the purple mahogany clam, dark mahogany clam, varnish clam or savory clam, is a species of saltwater clam, a marine bivalve mollusk in the family Psammobiidae. It was first described to science by Lovell Augustus Reeve , a British conchologist, in 1857.
An old quahog shell that has been bored (producing Entobia) and encrusted after the death of the clam. Hard clams are quite common throughout New England, north into Canada, and all down the Eastern seaboard of the United States to Florida; but they are particularly abundant between Cape Cod and New Jersey, where seeding and harvesting them is an important commercial form of aquaculture.
Mantle of giant clam with light-sensitive spots, which detect danger and cause the clam to close. Tridacna gigas, the giant clam, is the best-known species of the giant clam genus Tridacna. Giant clams are the largest living bivalve molluscs. Several other species of "giant clam" in the genus Tridacna are often misidentified as Tridacna gigas.
The Palourde clam by far is the most common native clam and it is both commercially harvested as well as locally collected, and Spisula solida, a relative of the Atlantic surf clam on the other side of the Atlantic, is seeing increased interest as a food source and aquaculture candidate; it is mainly found in the British Isles in Europe. [29]
The shell of the clam ranges from 15 centimetres (6 in) to over 20 centimetres (8 in) in length, but the extremely long siphons make the clam itself much longer than this: the "shaft" or siphons alone can be 1 metre (3 ft 3 in) in length. The geoduck is the largest burrowing clam in the world. [3]
Harvesters locate the clam by looking for a "show," which can present as either a hole or depression in the sand. [8] Some clams expose their siphons as the surf is receding making them far easier to spot; this behavior is called "necking". [9] Razor clams are commonly battered and fried in butter. They can also be used to make clam chowder.