So they must leave the sediment in the water which it will spread out thoroughly the coral and maybe pile up it finely cause those coral died from these of cause, it lead to government think about resolving problem for resilience and resistance decreasing of coral reef where there are improvement the quality of water by inspect and measure the quality of sediment in water. Restrain the building coal port and forbid new dredge spoil to create deeper port from being dumped in reef water. Even though the government forhibit to leave the waste or sediment in around of coral reef but it’s not include the island area, port or current is flow to coral reef area. Some factory or some ship is still release the waste water that I think the government should use the polluter pays principle for control its if it come from point source because I think this principle is more useful that is responsibility of institute who make the environment damaged. Plan to reduce pollution from fertilizers and pesticides used in coastal farming .All of ways I think it resolve the end of problem, not the beginning of its. It just do this problem end in that time but not sustainable.