Bioeconomics is the study of how people use and manage renewable natural resources, like fish, for their own economic benefit. For example, fishermen use boats and fishing equipment to catch fish from the ocean, rivers, and lakes. The fish then get sold to people in supermarkets, restaurants, and markets. When people buy the fish, it helps the fishermen make money, so they can buy boats and fishing equipment for the next catch. Bioeconomics looks at how we can use resources in a way that's sustainable and leaves enough fish for future generations. In terms of fisheries, it means making sure fishing boats don't take too many fish out of the sea, and that people use fishing methods that are good for the environment.