-The protection for freshwater aquifers from saltwater intrusion is remarkably critical

- With the current situation, if residents and government are unable to counter the effect of saltwater in the nick of time, it will accelerate consequences for the existence of coastal creatures and people due to human's activities, particularly pumping and agriculture .

- Pumping of fresh water from aquifer reduces water pressure and intensifies the effects, drawing salf water into new areas. 

When freshwater levels drop, the saltwater can proceed inland, reaching the pumped well. 

Also, the excessive of freshwater for agriculture and others breeds the water shortage in coastal areas. 

These kind of typical human's activities are also occurring frequently that residents cannot perceive their works are accumulated for contaminated water sources. 

In reality, most people are not likely to recognize the serious saltwater intrusion while they continuously do their own business harmful to the nature and their lives.

 Hence, human activities should be reconstructed to adapt with coastal conditions and diminish the effect.

Paraphrase: The recent increasing migration and number of coastal residents in Central Vietnam and South Vietnam leaves a huge potential consequence for the coast and human's livings due to saltwater instrusion. 

It is critically urgent that the tendency of falling coastal villages possibly may generate in future, unless Vietnamese people and government have no awareness and effective solution for this issue.