Emperor Penguin vs

Aptenodytes forsteri compared with Nitrosotenuis

Key Differences

• Emperor Penguin is Near Threatened while is Not Evaluated.

Taxonomic Classification

Rank	Emperor Penguin
Kingdom	Animalia (động vật)	Archaea (Archaea)
Phylum	Chordata (động vật có dây sống)	Thermoproteota (Thermoproteota)
Class	Aves (chim)	Nitrososphaeria (Nitrososphaeria)
Order	Sphenisciformes (Penguins)	Nitrososphaerales (Nitrososphaerales)
Family	Spheniscidae (Penguins)	Nitrosopumilaceae
Genus	Aptenodytes (Great Penguins)	Nitrosotenuis
Species	Aptenodytes forsteri	Nitrosotenuis

Conservation Status

Emperor Penguin

NT — Near Threatened

Population: ~595.0K

Trend: Stable →

NE — Not Evaluated

Physical Characteristics

Attribute	Emperor Penguin
Diet	Carnivore	—
Average Lifespan	20 years	—
Average Length	1.1 m	—
Average Weight	40.0 kg	—

Habitat & Geographic Range

Emperor Penguin

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and boreal forests and taiga, among 4 distinct biome types within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found in Norway. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Emperor Penguin

The world's largest penguin, emperor penguins stand up to 1.2 meters and weigh 45 kg, inhabiting the Antarctic continent in some of the most extreme conditions on Earth. They breed in midwinter darkness at temperatures below -60°C, with males incubating single eggs on their feet under a brood pouch for 65 days while females are at sea. Their huddling behavior — cycling individuals through the warm center of thousands-strong groups — is a masterclass in cooperative survival.

Nitrosotenuis is a genus of ammonia-oxidizing archaea in the phylum Thaumarchaeota, comprising species that perform nitrification in diverse environments. Members have been isolated from warm groundwater and other habitats, expanding our understanding of archaeal ammonia oxidizers beyond marine and soil environments. Their chemolithoautotrophic metabolism contributes significantly to the global nitrogen cycle.