has moderate similarity , with a calculated index of similarity of 0.51.
The information available showed that the nature of brackish-water snail communities of Surat Thani Province, between the mainland and samui, featured some similarity, but not high similarity. concerning land use by the local people in the station areas investigated(), the brackish-water snails of Surat Thani Province are facing degradation of habitat by human use. thus, brackish-water snails may be and indicator for studying environmental health impacts in the the future