Koala vs Nuttall-Wasserpest

Phascolarctos cinereus compared with Elodea nuttallii

Key Differences

• Koala is Vulnerable while Nuttall-Wasserpest is Not Evaluated.

Taxonomic Classification

Rank	Koala	Nuttall-Wasserpest
Kingdom	Animalia (Tier)	Plantae (Pflanzen)
Phylum	Chordata (Chordatiere)	Magnoliophyta (Flowering Plants)
Class	Mammalia (Säugetiere)	Liliopsida (Monocots)
Order	Diprotodontia (Marsupials)	Alismatales (Froschlöffelartige)
Family	Phascolarctidae (Koalas)	Hydrocharitaceae
Genus	Phascolarctos (Koalas)	Elodea
Species	Phascolarctos cinereus	Elodea nuttallii

Conservation Status

Koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Nuttall-Wasserpest

NE — Not Evaluated

Physical Characteristics

Attribute	Koala	Nuttall-Wasserpest
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.

Nuttall-Wasserpest

Habitat

Typically found in grasslands, wetlands, forests, and cultivated landscapes.

Range

Widely distributed across Asia (Japan), Europe (25 countries), and North America (Canada, United States).

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.