M arine benthic diatoms are important tools for food web and photosynthesis. In December 2012, epipelic diatom samples were taken from Akliman Bay, Sinop and were examined to determine the marine benthic diatom flora. As a result, 31 taxa from genus Amphora, Berkeleya, Biremis, Chamaepinnularia, Fallacia, Gomphonemopsis, Halamphora, Licmophora, Mastogloia, Navicula, Neosynedra, Nitzschia, Opephora, Parlibellus, Planothidium and Seminavis were found as new records for "Turkish marine benthic diatom flora". Also, Biremis, Gomphonemopsis and Neosynedra are new genera records for "Turkish marine benthic diatom flora".