Plankton and ice assemblages of antarctic algae were studied in 2006-2007. Diatoms prevailed in number of species and abundance in both ice and plankton samples. Three genera Chaetoceros, Thalassiosira and Fragilariopsis were the most diverse. Species of 10 genera (Chaetoceros, Thalassiosira, Coscinodiscus, Rhizosolenia, Proboscia, Eucampia, Corethron, Odontella, Fragilariopsis, Pseudo-nitzschia) dominated in plankton. Ice flora included mainly 6 diatom genera (Fragilariopsis, Berkeleya, Nitzschia, Entomoneis, Navicula, Cylindrotheca).