vs Polar bear

Methanofollis aquaemaris compared with Ursus maritimus

Key Differences

• is Not Evaluated while Polar bear is Vulnerable.

Taxonomic Classification

Rank		Polar bear
Kingdom	Archaea (Archaea)	Animalia (动物界)
Phylum	Halobacteriota (Halobacteriota)	Chordata (脊索动物门)
Class	Methanomicrobia (甲烷微菌纲)	Mammalia (哺乳動物)
Order	Methanomicrobiales (甲烷微菌目)	Carnivora (食肉目)
Family	Methanofollaceae	Ursidae (Bears)
Genus	Methanofollis	Ursus (Bears)
Species	Methanofollis aquaemaris	Ursus maritimus

Conservation Status

NE — Not Evaluated

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute		Polar bear
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

Habitat

Native to Asia, inhabiting ecosystems characteristic of the region.

Range

Found in Taiwan.

Polar bear

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. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Methanofollis aquaemaris 是甲烷微菌目的产甲烷古菌，从海洋沉积物中分离。为严格厌氧嗜氢产甲烷菌，以氢气为电子供体还原二氧化碳产生甲烷。其海洋栖息地使之有别于多个从淡水或陆地环境中分离的Methanofollis种类。

Polar bear

北极熊是地球上最大的陆地食肉动物，体重可超过700千克，分布于从加拿大到俄罗斯的北极海冰区。是高度特化的海洋哺乳动物，依赖海冰捕猎环斑海豹和髯海豹。是优秀的游泳者，能够横渡广阔的开阔水域。被列为易危种，因气候变化导致北极海冰迅速减少，种群正受到严重威胁。