From the table it can be seen that both the province has the surface water temperature has an average is 30.03± 0.4 °C, while in Phang Nga, a concentration of silicate-silicon is 3.77-25.23 microns. For chlorophyll a in Ranong province has an average of between 2.37 ± 0.75 μg/l, which is higher than the average of Phang Nga province.