An environment is everything which surrounds us naturally and affects our daily lives on the earth. Everything comes under an environment, the air which we breathe every moment, the water which we use for our daily routine, plants, animals and other living things, etc around us. An environment is called healthy environment when the natural cycle goes side by side without any disturbance. Any type of disturbance in the nature’s balance affects the environment totally which ruins the human lives.

Now, in the era of advance living standard of the human being, our environment is getting affected to a great extent by the means of air pollution, noise pollution, deforestation, water pollution, soil pollution, acid rain and other dangerous disasters created by the human beings through technological advancement. Therefore, we all must take an oath together to protect our natural environment to keep it safe as usual forever.

As in Vietnam, our country has a coastline of more than 3200 km with many unique mangrove systems with high biodiversity. However, the area of mangroves in Vietnam is rapidly decreasing. During 1943 - 1995, the area of mangroves in the Mekong Delta decreased from more than 154,000 ha to less than 15,174 ha, averagely losing 2,670 ha / year. Mangrove forests in Quang Ninh Province and Hai Phong City have also been massively cleared for reclamation and sea encroachment.