Seaweed is gaining importance as a source of human food, animal feed and health products, and in addition, have wide ranging industrial applications. Seaweed can grow faster than any land plant and requires neither fresh water, nor fertilization for cultivation.
As food, one can compare seaweed and kelp with fruits and vegetables. The different sea vegetables have many different flavors, characteristics, textures and colors, and differ from each other in the same way as apples, pumpkins and herbs.
This information comes from the website of Norwegian Seaweed Association.