As an old saying goes, "There are only so many fish in the sea", and this is a saying that is becoming more and more true each year. With that in mind, the Monterey Bay Aquarium has developed the Seafood Watch site to help people make informed decisions about purchasing different types of seafood. The site contains sections such as "Which Seafood To Buy & Why" and "What You Can Do". In the "Which Seafood to Buy & Why" section, visitors can take a look at some regional seafood guides and also learn which types of seafood are most endangered. Visitors can also order free copies of these guides online and also sign up to receive their free newsletter.