Four Mauremys rivulata (VALENCIENNES, 1833) and thirty-nine Emys orbicularis (LINNAEUS, 1758) collected in the Kayak River Delta (Saros Bay, Province of Canakkale, Turkish Thrace) were examined for epizoic algae on tail and carapace surfaces. Algae samples were grouped according to turtle species and shell size to detect potential patterns in the distributions of algae. Fourteen taxa of epizoic algae that were collected by scraping were identified from the turtles. Algae of the genera Chamaesiphon, Phormidium and Oscillatoria were found most frequently. The amount of algal growth was less in M rivulata than E. orbicularis when turtles of similar carapax length were compared.