koala vs Nurse shark

Phascolarctos cinereus compared with Ginglymostoma unami

Key Differences

• koala is Vulnerable while Nurse shark is Endangered.

Taxonomic Classification

Rank	koala	Nurse shark
Kingdom same	Animalia (حيوانات)	Animalia (حيوانات)
Phylum same	Chordata (حبليات)	Chordata (حبليات)
Class	Mammalia (ثدييات)	Elasmobranchii
Order	Diprotodontia (ثنائيات الأسنان الأمامية)	Orectolobiformes (القرش السجادي)
Family	Phascolarctidae (Koalas)	Ginglymostomatidae
Genus	Phascolarctos (Koalas)	Ginglymostoma
Species	Phascolarctos cinereus	Ginglymostoma unami

Evolutionary Relationship

koala and Nurse shark share a common ancestor at the Phylum level: Chordata. (حبليات)

Conservation Status

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Nurse shark

EN — Endangered

Physical Characteristics

Attribute	koala	Nurse shark
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.

Nurse shark

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.