Methanotrophic bacteria possess the unique ability to utilize methane (CH₄) as their sole source of carbon and energy. Globally, these bacteria contribute to approximately 10–20% of methane mitigation. This study aimed to isolate and screen methanotrophic bacteria from the mangrove forest in Bengkalis, Riau, using Nitrate Mineral Salt (NMS) Agar as the selective medium. Screening of potenti…