Alaska skate vs koala

Bathyraja parmifera compared with Phascolarctos cinereus

Key Differences

• Alaska skate is Least Concern while koala is Vulnerable.

Taxonomic Classification

Rank	Alaska skate	koala
Kingdom same	Animalia (สัตว์)	Animalia (สัตว์)
Phylum same	Chordata (สัตว์มีแกนสันหลัง)	Chordata (สัตว์มีแกนสันหลัง)
Class	Elasmobranchii	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)
Order	Rajiformes (อันดับปลาโรนัน)	Diprotodontia (Marsupials)
Family	Arhynchobatidae	Phascolarctidae (Koalas)
Genus	Bathyraja	Phascolarctos (Koalas)
Species	Bathyraja parmifera	Phascolarctos cinereus

Evolutionary Relationship

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

Conservation Status

Alaska skate

LC — Least Concern

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Alaska skate	koala
Diet	—	Herbivore
Average Lifespan	—	15 years
Average Length	—	75 cm
Average Weight	—	10.0 kg

Habitat & Geographic Range

Alaska skate

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.

Alaska skate

The Alaska skate (Bathyraja parmifera) is a species in the genus Bathyraja. It is currently classified as Least Concern on the IUCN Red List.

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.