Methylosphaera hansonii, also called Antarctic budding methanotroph AM6,[1] is a species of psychrophilic, group I methanotrophs, named after microbiologist Richard S.

[2] It is non-motile, coccoidal in morphology, does not form resting cells, reproduces by constriction, and requires seawater for growth.

They use methane and methanol as substrates to produce energy, and they can fix atmospheric nitrogen.

[3] The name has French and Greek roots.

Overall the name means "methyl sphere.