koala vs Manx Shearwater

Phascolarctos cinereus compared with Puffinus puffinus

Key Differences

• koala is Vulnerable while Manx Shearwater is Least Concern.
• koala is herbivore while Manx Shearwater is carnivore.
• koala is 22.2x heavier than Manx Shearwater.
• Manx Shearwater lives longer (50 years vs 15 years).

Taxonomic Classification

Rank	koala	Manx Shearwater
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Diprotodontia (Marsupials)	Procellariiformes (Procellariiformes)
Family	Phascolarctidae (Koalas)	Procellariidae
Genus	Phascolarctos (Koalas)	Puffinus
Species	Phascolarctos cinereus	Puffinus puffinus

Evolutionary Relationship

koala and Manx Shearwater share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Manx Shearwater

LC — Least Concern

Trend: Stable →

Physical Characteristics

Attribute	koala	Manx Shearwater
Diet	Herbivore	Carnivore
Average Lifespan	15 years	50 years
Average Length	75 cm	35 cm
Average Weight	10.0 kg	450 g

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.

Manx Shearwater

Habitat

Typically found in diverse ecosystems where prey species are available.

Range

Found across Europe (5 countries) and South America (Colombia, Ecuador).

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.

Manx Shearwater

A medium-sized seabird of the North Atlantic and North Pacific, Manx shearwaters are renowned for their extraordinary navigation abilities. They travel up to 1 million kilometers over a lifetime, migrating annually between breeding colonies on North Atlantic islands and wintering grounds off South America. Their stiff-winged shearing flight just above wave surfaces is characteristic. One individual lived for over 55 years, one of the longest-lived wild birds recorded.