European flat oyster vs koala

Ostrea edulis compared with Phascolarctos cinereus

Key Differences

• European flat oyster is Near Threatened while koala is Vulnerable.

Taxonomic Classification

Rank	European flat oyster	koala
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum	Mollusca (软体动物门)	Chordata (脊索动物门)
Class	Bivalvia (双壳纲)	Mammalia (哺乳動物)
Order	Ostreida (牡蠣目)	Diprotodontia (雙門齒目)
Family	Ostreidae	Phascolarctidae (Koalas)
Genus	Ostrea	Phascolarctos (Koalas)
Species	Ostrea edulis	Phascolarctos cinereus

Evolutionary Relationship

European flat oyster and koala share a common ancestor at the Kingdom level: Animalia. (动物界)

Conservation Status

European flat oyster

NT — Near Threatened

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	European flat oyster	koala
Diet	—	Herbivore
Average Lifespan	—	15 years
Average Length	—	75 cm
Average Weight	—	10.0 kg

Habitat & Geographic Range

European flat oyster

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical grasslands and savannas, and flooded grasslands and savannas, among 6 distinct biome types spanning the Afrotropic and Oceanian and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (Mauritius, Namibia), Asia (Israel), Europe (9 countries), North America (Canada, Mexico, United States), and Oceania and the Pacific (Australia, Fiji, Tonga). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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.

European flat oyster

欧洲平牡蛎（Ostrea edulis）在IUCN红色名录中被列为近危（NT）物种。接近受威胁标准，若无保护行动，种群可能变得脆弱。

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。

Shared Countries

Both species can be found in 1 countries:

🇦🇺 Australia