Methanogenium marinum

Methanogenium marinum is a psychrophilic, H2-using methanogen from Skan Bay, Alaska.^[1] Its cells are highly irregular, non-motile coccoids (diameter, 1 to 1.2 μm), occurring singly. AK-1 is its type strain.

Methanogenium marinum
Scientific classification
Domain:	Archaea
Kingdom:	Methanobacteriati
Phylum:	Halobacteriota
Class:	Methanomicrobia
Order:	Methanomicrobiales
Family:	Methanomicrobiaceae
Genus:	Methanogenium
Species:	M. marinum
Binomial name
Methanogenium marinum Chong et al., 2002

Morphology

The cells are highly irregular and coccoid in shape and non-motile, 1 to 1.2 μm in diameter. Like other species within the genus Methanogenium, they are strictly anaerobic.^[2]