Explanation

India's coral reefs are found in the Gulf of Mannar, the Gulf of Kachchh, Lakshadweep, and the Andaman and Nicobar Islands. The Gulf of Cambay (Khambhat) has high turbidity, a heavy sediment load and strong tidal currents, conditions in which reef-building corals cannot survive. Hence the Gulf of Cambay is the area without coral reefs.