The Pearl Oyster, scientifically known as Pinctada, is a type of marine mollusk found in warm coastal waters. These oysters are famous for their ability to produce pearls, which form when an irritant, such as a grain of sand, enters their shell. The oyster secretes layers of nacre, a substance that coats the irritant, eventually forming a pearl. Pearl oysters are typically harvested for both their pearls and meat. They play a significant role in the pearl industry, which cultivates these oysters in controlled environments to produce high-quality pearls. The shells of pearl oysters are also used in jewelry and decorative items.