This research was conducted in July-August 2019 in Nirwana Coast, Padang City of West Sumatera. The aim of this research was to determine the water quality, the structure community of epiphytic dinoflagellates in Nirwana Coast and the relationship of concentration of nitrate and phosphate with the abundance of epiphytic dinoflagellate in Nirwana Coast. The survey method was applied in this reseā¦