From the table it can be seen the both 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 µM. 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.