koala vs cocquille Saint-Jacques

Phascolarctos cinereus compared with Pecten maximus

Key Differences

• koala is Vulnerable while cocquille Saint-Jacques is Least Concern.

Taxonomic Classification

Rank	koala	cocquille Saint-Jacques
Kingdom same	Animalia (animal)	Animalia (animal)
Phylum	Chordata (Chordates)	Mollusca (mollusques)
Class	Mammalia (mammifères)	Bivalvia (Bivalvia)
Order	Diprotodontia (Marsupials)	Pectinida (Pectinida)
Family	Phascolarctidae (Koalas)	Pectinidae
Genus	Phascolarctos (Koalas)	Pecten
Species	Phascolarctos cinereus	Pecten maximus

Evolutionary Relationship

koala and cocquille Saint-Jacques share a common ancestor at the Kingdom level: Animalia. (animal)

Conservation Status

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

cocquille Saint-Jacques

LC — Least Concern

Physical Characteristics

Attribute	koala	cocquille Saint-Jacques
Diet	Herbivore	—
Average Lifespan	15 years	—
Average Length	75 cm	—
Average Weight	10.0 kg	—

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.

cocquille Saint-Jacques

Habitat

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

Range

Widely distributed across Asia (China), Europe (8 countries), and South America (Chile).

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.

cocquille Saint-Jacques

St. James' shell (Pecten maximus) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.