koala vs Leatherback Sea Turtle

Phascolarctos cinereus compared with Dermochelys coriacea

Key Differences

• koala is herbivore while Leatherback Sea Turtle is carnivore.
• Leatherback Sea Turtle is 50.0x heavier than koala.
• Leatherback Sea Turtle lives longer (50 years vs 15 years).

Taxonomic Classification

Rank	koala	Leatherback Sea Turtle
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (cordados)	Chordata (cordados)
Class	Mammalia (mamíferos)	Reptilia (réptil)
Order	Diprotodontia (Marsupials)	Testudines (Tartaruga)
Family	Phascolarctidae (Koalas)	Cheloniidae (Sea Turtles)
Genus	Phascolarctos (Koalas)	Chelonia (Green Sea Turtles)
Species	Phascolarctos cinereus	Dermochelys coriacea

Evolutionary Relationship

koala and Leatherback Sea Turtle share a common ancestor at the Phylum level: Chordata. (cordados)

Conservation Status

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Leatherback Sea Turtle

VU — Vulnerable

Population: ~35.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	koala	Leatherback Sea Turtle
Diet	Herbivore	Carnivore
Average Lifespan	15 years	50 years
Average Length	75 cm	2.0 m
Average Weight	10.0 kg	500.0 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.

Leatherback Sea Turtle

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 5 distinct biome types spanning the Australasia and Indomalayan and Neotropic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Costa Rica, Indonesia, Malaysia, and Trinidad and Tobago. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

koala

Icônico marsupial do leste e sudeste da Austrália, os coalas pesam até 15 kg e passam até 22 horas diárias dormindo para conservar energia de sua dieta de folhas de eucalipto, com baixo teor calórico. Altamente especializados para processar os compostos tóxicos do eucalipto que matariam a maioria dos outros mamíferos, possuem microbiomas intestinais unicamente adaptados para a destoxificação. Classificado como Em Perigo em 2022, com populações dizimadas pela doença de clamídia, desmatamento e mudanças climáticas.

Leatherback Sea Turtle

A tartaruga-de-couro é a maior tartaruga viva e o quarto réptil mais pesado. Ao contrário das demais tartarugas, possui uma carapaça mole e coriácea.