pollution and goverment stupidity
No. Clams do not produce pearls. Pearls form in nacreous mollusks from the family Bivalvia. Clams are non-nacreous, but can have growths that are similar to pearls, but are referred to as calcareous concretions.
Oysters are not the only type of mollusk that can produce pearls. Clams and mussels can also produce pearls, but that is a much rarer occurrence. Most pearls are produced by oysters in both freshwater and saltwater environments.
Some things that we get from the oceans are algae, table salt, fishes, sand. pearls etc.
Oysters make pearls
Oysters. Actually, clams and certain other molluscs can also produce pearls, but it's only oyster pearls that are of gem quality.
Department of Fisheries and Oceans indicates that pearls can form within the scallop's body or between the mantle and the shell. The pearls are usually irregular and small, only 1-2 mm, although some reach 5-6 mm in older animals. Larger pearls are very rare. Only 1-5% of scallops produce pearls.
Black Pearl oysters do not produce as many pearls naturally, therefore they have always been much rarer than white pearls. Now a days, pearls are often cultured and are not quite as rare.
Native Americans may have found "pearls" in clams, but those were not "pearls" as we would consider them today. Clams are non-nacreous mollusks and do not produce actual pearls. They produce what are known as "calcareous concretions", which lack the pearly luster associated with pearls as we know them. More likely, Native Americans found pearls in mussels not clams. Those that were near coastal areas may have also found and collected marine pearls, but not from clams.
Any shelled mollusk can produce some kind of pearl, but most are not valuable. Some freshwater mussels of the families Unionidae and Magaritiferidae produce pearls which are valued in the jewelry trade.
Pearls grow inside of oysters. Oysters can be found in many oceans of the worlds, which, of course, are not countries.
Pearls are biotic because they are formed by living organisms, specifically mollusks such as oysters and mussels. These creatures produce pearls as a defense mechanism against irritants, layering nacre around the foreign object. Thus, pearls are a natural product of biological processes.
Levitate. Ground-type moves don't affect it.