KONDISI TERUMBU KARANG DI PERAIRAN SEKITAR AREA BEROPERASINYA PERUSAHAAN TAMBANG BATU BARA (STUDI KASUS: PKP2B PT. KALTIM PRIMA COAL, KUTAI TIMUR) [Coral Reef Condition in Waters Surrounding Operational Site of Coal Mining Company (Case Study: PKP2B PT. (Research Center for Biology-Indonesian Institute of Sciences, 2022)