Seaweed or kelp is a common term and lacks an official definition of marine life. A type of seaweed may belong to one of several groups of multicellular algae without common ancestors such as red algae, green algae and brown algae. Seaweed can live in both salt and brackish water environments. They grow on coral reefs or on cliffs, or can grow in deep water with sunlight coming in for photosynthesis.
Seaweed has gradually become popular in many countries around the world. Seaweed is a very nutritious food. In the nourishing methods of many peoples in the world, seaweed is considered as a food to create elasticity, healthy physically and mentally for humans.