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spat grew larger by drawing in seawater from which they derived
microscopic particles of food. Before long, farmers gathered the baby
oysters, transplanted them in other waters to speed up their growth, and
then transplanted them once more into another body of water to fatten t
hem up.Until recently the supply of wild oysters and those crudely farmed
were more than enough to satisfy people’s needs. But today the delectable
seafood is no longer available in abundance. The problem has become so
serious that some oyster bed s have vanished entirely.Fortunately, as far
back as the early 1900’s marine biologists realized that if new measures
were not taken, oysters would become extinct or at best a luxury food. So
they set up well equipped hatcheries and went to work. But they did not
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