Spatial distribution shows that major mangrove areas are concentrated in Sundarbans in India and Bangladesh, Gujarat, Andaman & Nicobar, and Pichavaram in India, Indus Delta, Kalmat Khor Jiwani, and Miani Hor in Pakistan, and Puttalam Lagoon-Dutch Bay-Portugal Bay comples, Batticalo, and Trincomalee in Sri Lanka