General Information: This strain was first isolated from salt marsh sediment near Pawley's Island, South Carolina, USA. A methane-producing archaeaon. Methanococcus maripaludis is an obligately anaerobic, mesophilic, methane-producing archaeon. Growth on hydrogen and carbon dioxide results in the production of methane as a waste product. Stands out among methanogenic archaea as an ideal model species because of fast reproducible growth and effective genetic tools.