koala vs

Phascolarctos cinereus compared with Pinnularia divergentissima

Key Differences

• koala is Vulnerable while is Not Evaluated.

Taxonomic Classification

Rank	koala
Kingdom	Animalia (สัตว์)	Chromista (โครมิสตา)
Phylum	Chordata (สัตว์มีแกนสันหลัง)	Ochrophyta (Ochrophyta)
Class	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)	Bacillariophyceae (Bacillariophyceae)
Order	Diprotodontia (Marsupials)	Naviculales (Naviculales)
Family	Phascolarctidae (Koalas)	Pinnulariaceae
Genus	Phascolarctos (Koalas)	Pinnularia
Species	Phascolarctos cinereus	Pinnularia divergentissima

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 and Sweden.

koala

Iconic marsupial of eastern and southeastern Australia, koalas weigh up to 15 kg and spend up to 22 hours daily sleeping to conserve energy from their low-calorie eucalyptus leaf diet. Highly specialized to process toxic eucalyptus compounds that would kill most other mammals, they have gut microbiomes uniquely adapted for detoxification. Listed as Endangered in 2022, with populations decimated by chlamydia disease, habitat clearing, and climate change.

Pinnularia divergentissima is a large, boat-shaped freshwater diatom with strongly diverging costae radiating from the central area to the valve margin. It inhabits acidic, oligotrophic freshwater environments including mountain streams, peat bogs, and soft-water lakes. This photosynthetic diatom is a bioindicator of acidic, nutrient-poor freshwater conditions.