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Clams lay eggs, but most species of clams release both eggs and sperm into the water, where the eggs are fertilized. The tiny embryos drift in the water as they develop, and when they have turned into small clams they sink to the bottom and continue to develop until they are ready to breed, producing the next generation. How long they live depends on the species, with some living just a year or two and other types living many years.

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10y ago

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