Arctic/Pacific Loon vs koala

Gavia arctica compared with Phascolarctos cinereus

Key Differences

• Arctic/Pacific Loon is Least Concern while koala is Vulnerable.

Taxonomic Classification

Rank	Arctic/Pacific Loon	koala
Kingdom same	Animalia (động vật)	Animalia (động vật)
Phylum same	Chordata (động vật có dây sống)	Chordata (động vật có dây sống)
Class	Aves (chim)	Mammalia (lớp Thú)
Order	Gaviiformes (Gaviiformes)	Diprotodontia (Thú hai răng trước)
Family	Gaviidae	Phascolarctidae (Koalas)
Genus	Gavia	Phascolarctos (Koalas)
Species	Gavia arctica	Phascolarctos cinereus

Evolutionary Relationship

Arctic/Pacific Loon and koala share a common ancestor at the Phylum level: Chordata. (động vật có dây sống)

Conservation Status

Arctic/Pacific Loon

LC — Least Concern

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Arctic/Pacific Loon	koala
Diet	—	Herbivore
Average Lifespan	—	15 years
Average Length	—	75 cm
Average Weight	—	10.0 kg

Habitat & Geographic Range

Arctic/Pacific Loon

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Distributed across Belgium, Denmark, Norway, Russia, and Sweden.

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.

Arctic/Pacific Loon

The Arctic/Pacific Loon (Gavia arctica) is a species in the genus Gavia. It is currently classified as Least Concern on the IUCN Red List. Typically found in various aerial, terrestrial, and aquatic environments.

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.