dc.description.abstract | Tropical water in area of Kersik Village District of Marang Kayu was represent of the quite rich place in natural resources in East Kalimantan, while the displayed of coral reefs ecosystem had been continuing to water of Bontang until Berau as long as straits of Makassar. This research was aimed to know the condition of coral reefs at Kersik Village water, district of Marang Kayu, with mobilization of people activity around and minor numbers of publications. This research was condnented for two month in October-November 2019. The research was considered to some steps i.e. preparation, observation, determination of sampling point, then data collected, and data analysis. Form 4 station was found the species of coral reefs i.e. Acropora Encrusting (ACE), Acropora Branching (ACB), Acropora Digitate (ACD), Acropora Submassive (ACS), Acropora Tabulate (ACT), Coral Foliose (CF), and Coral Massive (CM). Belong to analysis of live coral reefs cover in approximately 30,56% to 75,64%. Which is that percentage number w | en_US |