A bay is a body of water that is partially enclosed by land, often forming a curve or indentation along a coastline. Bays can vary in size and depth and are typically calmer than the open sea, making them ideal for harbors and ports. They are important for marine ecosystems and can support a variety of wildlife. Bays can be found in many geographical locations around the world, such as the Chesapeake Bay in the United States or the Bay of Biscay in Europe. They play a crucial role in local economies, providing areas for fishing, recreation, and tourism.