Marine ecology is the branch of ecology dealing with the interdependence of all organisms living in the ocean, in shallow coastal waters, and on the seashore. The marine environment for all organisms consists of non-living, abiotic factors and living, biotic factors.Mangrove forests provide diverse goods and services and many communities are dependent on these formations for survival. In spite of this, only a small portion of global mangrove resources is currently under any active management. However, considerable information and knowledge on the sustainable management of this forest type is available. Using simple, easy-to-follow silvicultural regimes, forests such as the Sundarbans and Matang have been managed for several decades for sustainable production. If we practice the sustainable integrated approach to greening our coast, surely our offspring's will be saved from disasters like Tsunami, cyclone and sea level rise. At the same time we will ensure the sustainable wealth of fishery resources and livelihood security of fishing communities.