Sustainable fishing is a method of catching fish that ensures fish populations remain healthy and ecosystems stay balanced. It involves practices that prevent overfishing, allowing fish to reproduce and thrive. By using techniques that minimize harm to other marine life, sustainable fishing helps protect the ocean's biodiversity, which is crucial for the environment. Fishermen and companies that follow sustainable fishing guidelines often seek certifications, like those from the Marine Stewardship Council. These certifications help consumers make informed choices when buying seafood, ensuring they support practices that are good for both the planet and future generations.