koala vs Metallic Marine Isopod

Phascolarctos cinereus compared with Idotea metallica

Key Differences

• koala is Vulnerable while Metallic Marine Isopod is Not Evaluated.

Taxonomic Classification

Rank	koala	Metallic Marine Isopod
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Mammalia (Mammals)	Malacostraca (Crustaceans)
Order	Diprotodontia (Marsupials)	Isopoda (Isopoda)
Family	Phascolarctidae (Koalas)	Idoteidae
Genus	Phascolarctos (Koalas)	Idotea
Species	Phascolarctos cinereus	Idotea metallica

Evolutionary Relationship

koala and Metallic Marine Isopod share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Metallic Marine Isopod

NE — Not Evaluated

Physical Characteristics

Attribute	koala	Metallic Marine Isopod
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.

Metallic Marine Isopod

Habitat

Typically found in marine, freshwater, and terrestrial environments.

Range

Found across Europe (8 countries) and South America (Argentina).

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.