Physiological studies on the productivity of Gracilaria

Abstract

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