Bigeye Sixgill Shark vs koala

Hexanchus nakamurai compared with Phascolarctos cinereus

Key Differences

Bigeye Sixgill Shark is Near Threatened while koala is Vulnerable.

Taxonomic Classification

Rank	Bigeye Sixgill Shark	koala
Kingdom same	Animalia (hewan)	Animalia (hewan)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Elasmobranchii	Mammalia (mamalia)
Order	Hexanchiformes (Hexanchiformes)	Diprotodontia (Marsupials)
Family	Hexanchidae	Phascolarctidae (Koalas)
Genus	Hexanchus	Phascolarctos (Koalas)
Species	Hexanchus nakamurai	Phascolarctos cinereus

Evolutionary Relationship

Bigeye Sixgill Shark and koala share a common ancestor at the Phylum level: Chordata. (Chordates)

Lihat Phylum: Chordata

Conservation Status

Bigeye Sixgill Shark

NT — Near Threatened

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Bigeye Sixgill Shark	koala
Diet	—	Herbivore
Average Lifespan	—	15 years
Average Length	—	75 cm
Average Weight	—	10.0 kg

Habitat & Geographic Range

Bigeye Sixgill Shark

Habitat

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

Range

Distributed across Taiwan and Venezuela. 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.

Bigeye Sixgill Shark

The Bigeye Sixgill Shark (Hexanchus nakamurai) is a species in the genus Hexanchus. It is currently classified as Near Threatened on the IUCN Red List. Native to Asia and South America, inhabiting ecosystems characteristic of the region.

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.