koala vs smooth giant clam

Phascolarctos cinereus compared with Tridacna derasa

Taxonomic Classification

Rank	koala	smooth giant clam
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum	Chordata (脊索动物门)	Mollusca (软体动物门)
Class	Mammalia (哺乳動物)	Bivalvia (双壳纲)
Order	Diprotodontia (雙門齒目)	Cardiida (鸟蛤目)
Family	Phascolarctidae (Koalas)	Cardiidae
Genus	Phascolarctos (Koalas)	Tridacna
Species	Phascolarctos cinereus	Tridacna derasa

Evolutionary Relationship

koala and smooth giant clam share a common ancestor at the Kingdom level: Animalia. (动物界)

Conservation Status

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

smooth giant clam

VU — Vulnerable

Physical Characteristics

Attribute	koala	smooth giant clam
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.

smooth giant clam

Habitat

Inhabits tropical and subtropical moist broadleaf forests within the Oceanian biogeographic realm.

Range

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

koala

澳大利亚东部和东南部的标志性有袋类动物，体重最大可达15千克，为了节省低热量桉树叶食物所提供的能量，每天最多睡眠22小时。高度特化，能够处理会致大多数其他哺乳动物死亡的有毒桉树成分，拥有专门适应解毒功能的肠道微生物群。因衣原体病、栖息地开发和气候变化导致种群锐减，2022年被列为濒危物种。