Ghost shark vs koala

Hydrolagus mitsukurii compared with Phascolarctos cinereus

Key Differences

• Ghost shark is Near Threatened while koala is Vulnerable.

Taxonomic Classification

Rank	Ghost shark	koala
Kingdom same	Animalia (สัตว์)	Animalia (สัตว์)
Phylum same	Chordata (สัตว์มีแกนสันหลัง)	Chordata (สัตว์มีแกนสันหลัง)
Class	Holocephali (Holocephali)	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)
Order	Chimaeriformes (ปลาคิเมียรา)	Diprotodontia (Marsupials)
Family	Chimaeridae	Phascolarctidae (Koalas)
Genus	Hydrolagus	Phascolarctos (Koalas)
Species	Hydrolagus mitsukurii	Phascolarctos cinereus

Evolutionary Relationship

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

Conservation Status

Ghost shark

NT — Near Threatened

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Ghost shark	koala
Diet	—	Herbivore
Average Lifespan	—	15 years
Average Length	—	75 cm
Average Weight	—	10.0 kg

Habitat & Geographic Range

Ghost shark

Habitat

Native to Asia, inhabiting ecosystems characteristic of the region.

Range

Found in Taiwan. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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.

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.