koala vs

Phascolarctos cinereus compared with Surirella biseriata

Key Differences

• koala is Vulnerable while is Not Evaluated.

Taxonomic Classification

Rank	koala
Kingdom	Animalia (hayvan)	Chromista (Kromista)
Phylum	Chordata (Kordalılar)	Ochrophyta (Ochrophyta)
Class	Mammalia (memeliler)	Bacillariophyceae (Bacillariophyceae)
Order	Diprotodontia (İki ön dişliler)	Surirellales (Surirellales)
Family	Phascolarctidae (Koalas)	Surirellaceae
Genus	Phascolarctos (Koalas)	Surirella
Species	Phascolarctos cinereus	Surirella biseriata

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 Asia and Europe and South America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Brazil, Norway, Portugal, Sweden, and Taiwan.

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.

Surirella biseriata is a large, boat-shaped freshwater diatom with two rows of fibulae forming a distinctive pattern along both sides of the valve. It inhabits benthic zones of clean to moderately enriched freshwater lakes and rivers across temperate regions. This photosynthetic diatom contributes to benthic algal communities and organic matter production.