Coral reefs are not found in which one of the following regions ?

Coral reefs are not found in which one of the following regions ?

Lakshadweep Islands
Gulf of Kachchh
Gulf of Mannar
Gulf of Cambay
This question was previously asked in
UPSC CDS-2 – 2019
Coral reefs are typically not found in the Gulf of Cambay (Khambhat). This gulf is characterized by high turbidity due to significant sediment load from major rivers like Narmada, Tapi, Mahi, and Sabarmati, as well as strong tidal currents. These conditions are generally unfavorable for the growth and survival of coral polyps, which require clear, shallow, warm marine water.
Coral reefs require specific environmental conditions, including clear, warm, shallow water with sufficient salinity and low turbidity.
India has extensive coral reef areas in Lakshadweep, Gulf of Kachchh, Gulf of Mannar, and Andaman & Nicobar Islands. These regions provide suitable habitats for coral growth. The Gulf of Cambay, however, is known more for its tidal energy potential and estuarine characteristics.