LM and SEM images of the most common and some other diatoms findings on Abrau Peninsula: 1-3 Navicula blazencicae; 4-7 – Navicula antonii; 8-10 – Mastogloia sp.2; 11, 12 – Cocconeis placentula s.l.; 13, 14 – Achnanthidium minutissimum; 15, 16 – Brachysira aponina; 17, 18 – Planothidium frequentissimum; 19, 20 – Gomphonema parvulum s.l.; 21-23  – Amphora inariensis; 24-26 – Gomphonema pumilum var. rigidum; 27, 28 – Mastogloia lanceolata. Scale bar = 10 µm and applies for all images, except SEM pictures 7, 10, 16, 23, 26, 28. LM – light microscopy, SEM – scanning electron microscopy.