Seaweeds, as the name implies covers the macroscopic plant life of the sea except the flowering plants. Most of the seaweeds are attached to rocks and also grow oh other plants as epiphytes. Along the coastline of India, seaweeds are abundant where rocky or coral formations occur. This sort of substratum is found in the states .of Tamil Nadu and Gujsrst and in the vicinity of Bombay, Ratnagiri, Goa, Karwar, Vizhinjam, Varkala, Vishakapatnam and in the Lakshadweep and Andaman-Nicobar Islands. The seaweeds are classified into three important Q'Oups namely Green, Brown and Red seaweeds. Seaweeds contain different vitamins, minerals, trace elements and proteins. Seaweeds are also a rich source of iodine.