Numerous Indo-Pacific originated alien foraminifer species have been recorded in the eastern Mediterranean. Each year new species are being added. In the framework of a foraminiferal study conducted on the east Aegean coast the benthic foraminifer Polymorphina fistulosa is found in the foraminiferal assemblage around a hot water submarine spring in Ilıca Bay (Çesme, Turkey). It is also observed in one sediment sample collected from the western entrance of the Dardanelles (Çanakkale, Turkey). These records constitute the first record of this Pacific originated species in the Aegean Sea.
