The word is often applied only to those that are edible and live as infauna, spending most of their lives halfway buried in the sand of the seafloor or riverbeds. Clams that have been defrosted in the fridge can be kept for an additional 1 to 2 days in the refrigerator before cooking; clams that were thawed in the microwave or in cold water should be cooked immediately. It is used to prepare many delicious dishes like marvai sukka, marvai gassi, and marvai pundi. They can be closed to protect the animal within or allowed to open. Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree.... …more than 15,000 species of clams, oysters, mussels, scallops, and other members of the phylum Mollusca characterized by a shell that is... Get exclusive access to content from our 1768 First Edition with your subscription. Articles from Britannica Encyclopedias for elementary and high school students. Bivalves usually live on or in sandy or muddy bottoms. [16] Historically and on a small scale, the barrier islands of North Carolina known as the Outer Banks would catch these species and put them in soups or steam them; other recipes from the past recommend pickling.[17]. [18] The bamboo clam is also notorious for having a very sharp edge of its shell, and when harvested by hand must be handled with great care. More than 15,000 living species of bivalves are known, of which about 500 live in fresh water; the others occur in all seas. Clam, in general, any member of the invertebrate class Bivalvia—mollusks with a bivalved shell (i.e., one with two separate sections). Bacteria grow rapidly at temperatures between 40 °F and 140 °F; clams should be discarded if left out for more than 2 hours at room temperature and always discard if clams are no longer alive. Corrections? [citation needed], In Judaism, clams are considered non-kosher (treif); The donax clam (Donax), also known as the coquina clam, is also commonly eaten in broth or chowder. The Mississippi and St. Lawrence river basins were home to 297 North American species of the bivalve mollusk families Unionidae and Margaritiferidae. Of these, 21 have…, A clamshell is an example of a simple system in which a rigid skeleton is worked by muscles. Common clams not ordinarily eaten include long siphon clams (Sanguinolariidae), wedge clams (Mesodesmatidae), basket clams (Corbulidae), slender clams (Pandoridae), perforated clams (Thraciidae), and boring clams (see piddock). That should keep them alive for a few days. Clams also have kidneys, a heart, a mouth, a stomach, and a nervous system. Updates? M. campechiensis, the southern quahog, is about 7.5 to 15 cm long and has a heavy, white, plump shell. [citation needed], In Kerala clams are used to make curries and fried with coconut. [35], Learn how and when to remove this template message, https://www.wildbunnysland.com/can-you-eat-freshwater-clams/, https://www.fws.gov/midwest/endangered/clams/mussels.html, "Ming the Clam, World's Oldest Animal, Was Actually 507 Years Old", https://www.nwfsc.noaa.gov/education/documents/Marine%20Foodweb%20Handout.pdf, https://www.westsoundwildlife.org/wildlife/FunFacts/FF_RiverOtters.html, https://www.marwell.org.uk/zoo/explore/animals/61/asian-small-clawed-otter, https://ambergriscaye.com/birds/roseate.html, https://www.nationalgeographic.com/animals/birds/w/whooping-crane/, http://www.geographia.com/bonaire/bonbrd01.htm, "Nisqually People and the River – Yelm History Project", "Tsawwassen First Nation History and Timeline", "Plenty of clams, oysters in Puget Sound and Hood Canal", "All About Geoduck: The Life of a (Delicious) Oversized Mollusk", "Digging for Pismo clams at San Diego Beaches", https://www.undercurrentnews.com/2019/04/10/trade-insights-more-than-70-of-uk-seafood-exports-go-to-eu/, "Mesolithic middens and molluscan ecology: A view from southern Britain", https://britishseafishing.co.uk/razorfish/, https://www.alamy.com/stock-photo-razor-clams-on-display-in-billingsgate-fish-market-london-74063195.html, Deep In The Ocean A Clam That Acts Like A Plant, https://en.wikipedia.org/w/index.php?title=Clam&oldid=983104917, Articles needing additional references from January 2019, All articles needing additional references, Articles with unsourced statements from January 2019, Creative Commons Attribution-ShareAlike License, This page was last edited on 12 October 2020, at 08:04. Our editors will review what you’ve submitted and determine whether to revise the article. The size of clams ranges from 0.1 mm (0.004 inch) in Condylocardia to 1.2 metres across in the giant clam (Tridacna gigas) of the Pacific and Indian oceans. Store in a container that permits airflow and will keep them damp, and put in the fridge. They are alive when you buy them - they must be or they will make you sick. The valves are connected to one another at a hinge. To further extend the shelf life of raw clams, freeze; when freezing, place clams in the freezer before the number of days shown for refrigerator storage has elapsed. They are muscles (bivalves). The fastest clams can dig an inch per second. Clam, in general, any member of the invertebrate class Bivalvia—mollusks with a bivalved shell (i.e., one with two separate sections). M. mercenaria is about 7.5 to 12.5 cm (3 to 5 inches) long. More than 15,000 living species of bivalves are known, of which about 500 live in fresh water; the others occur in all seas. Some clams have life cycles of only one year, while at least one may be over 500 years old. In culinary use, within the eastern coast of the United States and large swathes of the Maritimes of Canada, the term "clam" most often refers to the hard clam Mercenaria mercenaria. The shell is dirty white, oval, and 7.5 to 15 cm long. Scallops are also used for food nationwide, but not cockles: they are more difficult to get than in Europe because of their habit of being farther out in the tide than European species on the West Coast, and on the East Coast they are often found in salt marshes and mudflats where mosquitoes are abundant.
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