Oyster is the common name given to various Families of clam, found in both marine and brackish waters. They are filter feeders, drawing water in through their gills and straining it of nutrients, which are then trasnported to the mouth. Each Oyster is capable of filtering up to 5 litres of water an hour, improving the water quality of their environment. Many species of Oyster are harvested for the food industry, with the internal organs being considered a delicacy and reported to have aphrodisiac properties. They are high in zinc and other nutrients, whilst also being low in calories.
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