The presence of marine shells at Tell Aqab attests to links further afield, to the nearby Mediterranean or Black Seas. Two specimens of Nassarius circumcinctus and one of Calliostoma zizyphinum were found in mid-to-late Halaf contexts at Tell Aqab.[4] A survey of the distribution of shellfish in the "Seas of Turkey", no C. zizyphinum nor N. circumcuntus was found in the Black Sea or Sea of Marmara, however both were found in the Mediterranean and Aegean Seas.[2]