The recorded invertebrate fauna in the three collection sites belonging to eight phyla, which are: Protozoa, Porifera, Coelenterata, Nematoda, Annelida, Arthropoda, Mollusca and Echinodermata. Phylum Arthropoda and its subphylum Crustacea are dominant in all sites. The total number of species and individuals inside the community displayed a high diversity in all sites. The diversity index values depended on the number of species and individuals within each community. Statistical analysis of the data clarifies that the distinct similarity values between the present communities are due to the random occurrence and few number of rare species in each community. Also, the sigmoid curves showed more complex pattern of niche differentiation and overlap between the species in each site. The dendogram tree resulted in two main groups, each of which is divided into subgroups. The discrimination between the groups and their subgroups in each collection site is based on the occurrence or absence of species.