koala vs

Phascolarctos cinereus compared with Surirella brebissonii

Key Differences

• koala is Vulnerable while is Not Evaluated.

Taxonomic Classification

Rank	koala
Kingdom	Animalia (动物界)	Chromista (色藻界)
Phylum	Chordata (脊索动物门)	Ochrophyta (淡色藻门)
Class	Mammalia (哺乳動物)	Bacillariophyceae (硅藻纲)
Order	Diprotodontia (雙門齒目)	Surirellales (双菱藻目)
Family	Phascolarctidae (Koalas)	Surirellaceae
Genus	Phascolarctos (Koalas)	Surirella
Species	Phascolarctos cinereus	Surirella brebissonii

Conservation Status

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

NE — Not Evaluated

Physical Characteristics

Attribute	koala
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.

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway, Portugal, and Sweden.

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。

Surirella brebissonii是一种淡水硅藻，具有明显扭曲或S形的细胞形态，被带有壳缝系统的硅质壳体覆盖。栖息于温带地区的河流、湖泊及营养丰富的淡水环境。这种光合微藻构成底栖浮游植物群落的一部分，并作为小型无脊椎动物的食物来源。