Diversity of Cnidaria and Ctenophora from the coasts of Türkiye

The compilation of papers on the phyla Cnidaria and Ctenophora inhabiting the coasts of Türkiye (Black Sea, Sea of Marmara,Aegean Sea, and Levantine Sea) together with the new records of cnidarian species presented in this study yielded 296 cnidarian and8 ctenophore species. Among the cnidarian groups, Hydrozoa were represented by 160 species, Scyphozoa by 16 species, Anthozoa by87 species, and Myxozoa by 31 species. The number of species of cnidarians and ctenophores varies greatly between regions due to thedifferent environmental conditions of the seas and the level of scientific effort in each sea. A total of 47 cnidarian and five ctenophorespecies were reported from the Black Sea, 160 cnidarian and four ctenophore species from the Sea of Marmara, 176 cnidarian and sixctenophore species from the Aegean Sea, and 103 cnidarian and four ctenophore species from the Levantine Sea. A total of 18 aliencnidarian and two alien ctenophore species have been found on the coasts of Türkiye, of which eight species belong to Hydrozoa, fivespecies belong to Scyphozoa, and five species belong to Anthozoa. Four endangered and six vulnerable species are known from theregions. The compilation of papers on the phyla Cnidaria and Ctenophora inhabiting the coasts of Türkiye (Black Sea, Sea of Marmara, Aegean Sea, and Levantine Sea) together with the new records of cnidarian species presented in this study yielded 296 cnidarian and 8 ctenophore species. Among the cnidarian groups, Hydrozoa were represented by 160 species, Scyphozoa by 16 species, Anthozoa by 87 species, and Myxozoa by 31 species. The number of species of cnidarians and ctenophores varies greatly between regions due to the different environmental conditions of the seas and the level of scientific effort in each sea. A total of 47 cnidarian and five ctenophore species were reported from the Black Sea, 160 cnidarian and four ctenophore species from the Sea of Marmara, 176 cnidarian and six ctenophore species from the Aegean Sea, and 103 cnidarian and four ctenophore species from the Levantine Sea. A total of 18 alien cnidarian and two alien ctenophore species have been found on the coasts of Türkiye, of which eight species belong to Hydrozoa, five species belong to Scyphozoa, and five species belong to Anthozoa. Four endangered and six vulnerable species are known from the regions.