Koala vs Schwellhai

Phascolarctos cinereus compared with Cephaloscyllium ventriosum

Key Differences

• Koala is Vulnerable while Schwellhai is Least Concern.

Taxonomic Classification

Rank	Koala	Schwellhai
Kingdom same	Animalia (Tier)	Animalia (Tier)
Phylum same	Chordata (Chordatiere)	Chordata (Chordatiere)
Class	Mammalia (Säugetiere)	Chondrichthyes (Knorpelfische)
Order	Diprotodontia (Marsupials)	Carcharhiniformes (Grundhaie)
Family	Phascolarctidae (Koalas)	Scyliorhinidae
Genus	Phascolarctos (Koalas)	Cephaloscyllium
Species	Phascolarctos cinereus	Cephaloscyllium ventriosum

Evolutionary Relationship

Koala and Schwellhai share a common ancestor at the Phylum level: Chordata. (Chordatiere)

Conservation Status

Koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Schwellhai

LC — Least Concern

Physical Characteristics

Attribute	Koala	Schwellhai
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.

Schwellhai

Habitat

Typically found in marine environments from coastal waters to deep ocean.

Range

Found in Chile.

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.