koala vs 砂海螂

Phascolarctos cinereus compared with Mya arenaria

Taxonomic Classification

Rank	koala	砂海螂
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)	Myida (海螂目)
Family	Phascolarctidae (Koalas)	Myidae
Genus	Phascolarctos (Koalas)	Mya
Species	Phascolarctos cinereus	Mya arenaria

Evolutionary Relationship

koala and 砂海螂 share a common ancestor at the Kingdom level: Animalia. (动物界)

Conservation Status

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

砂海螂

VU — Vulnerable

Physical Characteristics

Attribute	koala	砂海螂
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.

砂海螂

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and temperate grasslands and steppes, among 5 distinct biome types within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (Georgia, Turkey), Europe (22 countries), and North America (Canada, United States). 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。

砂海螂

沙蛤（Mya arenaria）在IUCN红色名录中被评为易危（VU）。在野外面临高度濒危风险，种群数量下降，栖息地压力增加。