👉 A gastropod, also known as an oyster, is a type of shellfish that belongs to the order Crustacea. It consists of two sets of cells: the outer and inner cell walls. The outer cell wall is composed mainly of water, while the inner cell wall contains proteins and lipids. Gastropods are typically found in freshwater environments such as rivers, lakes, and oceans. They play a crucial role in marine ecosystems by providing food for fish, crustaceans
