The windowpane oyster, scientifically known as Placuna placenta, is a bivalve mollusk found in shallow coastal waters of the Indian Ocean and Western Pacific. It is recognized for its distinctive, translucent shell that resembles a windowpane, allowing light to pass through. These oysters typically inhabit sandy or muddy substrates and are often collected for their shells, which are used in crafts and jewelry. Windowpane oysters are filter feeders, meaning they obtain their food by filtering plankton and other small particles from the water. They play a role in maintaining water quality by helping to remove excess nutrients and particulates. Their unique shells and ecological importance make them a notable species in marine environments.