koala vs Thick Shelled River Mussel

Phascolarctos cinereus compared with Unio crassus

Key Differences

• koala is Vulnerable while Thick Shelled River Mussel is Endangered.

Taxonomic Classification

Rank	koala	Thick Shelled River Mussel
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum	Chordata (脊索動物)	Mollusca (軟体動物)
Class	Mammalia (哺乳類)	Bivalvia (二枚貝)
Order	Diprotodontia (カンガルー目)	Unionida (イシガイ目)
Family	Phascolarctidae (Koalas)	Unionidae
Genus	Phascolarctos (Koalas)	Unio
Species	Phascolarctos cinereus	Unio crassus

Evolutionary Relationship

koala and Thick Shelled River Mussel share a common ancestor at the Kingdom level: Animalia. (動物)

Conservation Status

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Thick Shelled River Mussel

EN — Endangered

Physical Characteristics

Attribute	koala	Thick Shelled River Mussel
Diet	Herbivore	—
Average Lifespan	15 years	—
Average Length	75 cm	—
Average Weight	10.0 kg	—

Habitat & Geographic Range

koala

Habitat

Typically found in grasslands, forests, and vegetated habitats.

Range

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

Thick Shelled River Mussel

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Belgium, Denmark, Norway, Sweden, and Ukraine. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

koala

オーストラリア東部・南東部を代表する有袋類で、体重は最大15kgに達し、低カロリーのユーカリの葉食から得るエネルギーを節約するために1日最大22時間を睡眠に費やす。他の哺乳類の多くを死に至らしめる有毒なユーカリ成分を処理するために高度に特化しており、解毒に特別に適応した腸内微生物叢を持つ。クラミジア感染症、生息地の伐採、気候変動により個体数が激減し、2022年に絶滅危惧種に指定された。