Mangroves are defined as assemblages of salt tolerant trees and shrubs that grow in the intertidal regions of the tropical and subtropical sheltered coastlines. They grow luxuriantly in the places where freshwater mixes with seawater and where sediment is composed of accumulated deposits of mud. Mangroves sit like platforms on the mud. Their roots are imbedded in the mud just deep enough, so plants don’t wash away. The areal roots also spread out in such a way that it actslike buttresses. Mangrove vegetation has been reported in all the nine coastal States and the island territories of Andaman and Nicobar Islands and Lakshadweep.