Seaweed is both the world's oldest and newest superfood. As a food, seaweeds are now more associated with the East than with the West, yet they have long been eaten in many parts of the world, including Europe and the Americas. Mistakenly thought of today as a forage food for the poor, in ancient times seaweed was highly prized, a delicacy reserved for royalty in Japan, China, Korea and the Pacific Islands. Driven by the growing limitations of land resources, the search for new sustainable foods, pharmaceuticals and other products is turning to seaweeds - the world's last great renewable natural resource and a culinary treasure ready for rediscovery.