Diversity of Echinoderms in Drini Beach Gunung Kidul, Yogyakarta

Research on the diversity of echinoderms at Drini Beach, Gunung Kidul, Yogyakarta has been conducted from December 2020 to July 2021. This study aimed determine Echinoderm index. The method sampling technique used belt transect with determination by purposive three stations in intertidal zone based substrate variations. Station 1 had coral type, station 2 seagrass and sand type for 3. sample this was species Echinoderms found area. After sampling, it obtained 7 consisting 3 classes, classified into 4 orders, 6 families. index all is low, followed a low evenness value high dominance value. Ophiocoma erinaceus dominant one two, while Tripneustes gratilla three. Moreover, most common habitat due availability abundant food, laying places echinoderms, shelter avoid predators. In addition, also supported temperature, pH, salinity, strong currents, good depth