Its cells are highly motile , irregular cocci , with a polar bundle of flagella .
Methanothermococcus okinawensis is a thermophilic , methane - producing archaeon first isolated from deep - sea hydrothermal vent on the western Pacific Ocean .
Methanothermococcus okinawensis ' cells are highly motile , irregular cocci , with a polar bundle of flagella .
Methanothermococcus okinawensis is a thermophilic , methane - producing archaeon first isolated from deep - sea hydrothermal vent on the western Pacific Ocean .