Samples were collected from benthic and subaerophytic habitats of fresh and brackish water in Korea from April 2017 to April 2018. Accordingly, three genera and seven species were newly recorded in Korea. Three unrecorded genera were Cephalothrix, Cyanophanon and Toxifilum, and seven species were Anagnostidinema pseudacutissimum, Calothrix elenkinii, Cephalothrix komarekiana, Cyanophanon mirabile, Cyanosarcina chroococcoides, Leptolyngbya ectocarpi and Toxifilum mysidocida. Anagnostidinema pseudacutissimum and Cephalothrix komarekiana had been previously reported to inhabit freshwater, but these were found to be present in brackish water during the period of the present study. Also, Cyanosarcina chroococcoides previously reported to inhabit moorland waters and swamps, were found to be present in subaerophytic habitat.

Abstract
 INTRODUCTION
 MATERIALS AND METHODS
 RESULTS AND DISCUSSION
 REFERENCES

• Byoung Cheol Yim(Department of Life Science, College of Natural Science, Kyonggi University)
• Jee Hwan Kim(Bioresources Culture Collection Division, Nakdonggang National Institute of Biological Resources)
• Sung Ro Yoon(Department of Life Science, College of Natural Science, Kyonggi University)
• Nam Ju Lee(Department of Life Science, College of Natural Science, Kyonggi University)
• Ok Min Lee(Department of Life Science, College of Natural Science, Kyonggi University) Corresponding author