The mangrove area is recognized as an area of vital natural resources, if s the interesting and distinctive community being called a "land - builder" (Odum, 1960), which extends the coast and protects the shore from excessive erosion
Tsunami is a word in Japanese language and originally means a great sea wave rushing into "tsu" pr port. In Japan tsunami denotes two types of meteorological tsunami, and the other is for tsunami generated by earthquake which also known as seismic sea wave.