Pinctada fucata, commonly known as the pearl oyster, is a species of marine bivalve mollusk found in warm coastal waters. It is primarily located in the Indian Ocean and Western Pacific, where it inhabits shallow reefs. This oyster is notable for its ability to produce pearls, which form when an irritant enters its shell. The shell of Pinctada fucata is typically rounded and can vary in color, often displaying shades of white, cream, or light brown. These oysters play a significant role in their ecosystems, providing habitat for various marine organisms and contributing to the health of coral reefs.