Physiological studies on the productivity of Gracilaria

About 72% of the earth's surface is covered by ocean, which can be \nlinked to a number of basins or shallow dishes. The lip of the basin or \ndi sh corresponds to the continental shelf and main part is the ocean proper. \nThe average depth is greater than 5000 m. \nIndian coast line stretches to about 7152 Km in its South, South-east \nand South-west by the seas, Indian Ocean, Bay of Bengal and Arabian Sea. \nThe rocky shores of Gujarat and Maharastra in the West and Andhra Pradesh \nand Tamil Nadu on the East and coral reefs of the islands off South Indian \ncoast support a rich and varied vegetation of marine algae