Algal floras of intertidal and infralittoral zones that were located on the rocky shore and the artificial coast in Enoshima Island in Sagami Bay of central Japan, were carried out from May in 2016 to April in 2018. In this study, totally 105 species of algae in which contained 10 species of green algae (Chlorophyceae sensu lato), 25 species of brown algae (Phaeophyceae) and 70 species of red algae (Rhodophyceae sensu lato) were recorded. Numbers of species (from 21 to 46) at each stations in Enoshima Island were quite variable.