Beach cultured oysters are raised on tidal beaches with sandy or rocky bottoms. They are accustomed to fighting the tides, clamping tightly shut during low tides to preserve their liquor and to protect themselves against predators. Because of this tough life, beach raised oysters are hearty. Their meats are firm. Beach grown oysters have hard, sturdy shells which shuckers like to work with. And their ability to close tightly, coupled with their hard shells, gives them a longer shelf life.