Marine algae, as primary producers, are ecologically important, and economically have been used as food and medicines for centuries. Today, various species of marine algae provide not only food but also produce extracts such as agar, carrageenans, and alginates. These extracts are used in numerous food, pharmaceutical, cosmetic, and industrial applications.

• Algae as the entrée
• Cookbook references
• Secondary products of brown algae
• Secondary products of red algae
• Industrial and other uses