Frequency diagram comparing prokaryotic phyla compositions representing summer and winter Kra reef surface, Tha Wang and Tham Phang coasts of Sichang island, GS039, GS040 and GS045. Diagram was displayed in gradient colors. Phyla with red color convey that they were higher-represented when comparing with the average phyla compositions. Phyla with blue color mean that they were under-represented when comparing with the average phyla compositions. Grey color means no species present at that phylum.