Green Sea Turtle vs koala

Chelonia mydas compared with Phascolarctos cinereus

Key Differences

• Green Sea Turtle is Endangered while koala is Vulnerable.
• Green Sea Turtle is 20.0x heavier than koala.
• Green Sea Turtle lives longer (80 years vs 15 years).

Taxonomic Classification

Rank	Green Sea Turtle	koala
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Reptilia (Reptiles)	Mammalia (Mammals)
Order	Testudines (Turtles & Tortoises)	Diprotodontia (Marsupials)
Family	Cheloniidae (Sea Turtles)	Phascolarctidae (Koalas)
Genus	Chelonia (Green Sea Turtles)	Phascolarctos (Koalas)
Species	Chelonia mydas	Phascolarctos cinereus

Evolutionary Relationship

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

Conservation Status

Green Sea Turtle

EN — Endangered

Population: ~85.0K

Trend: Decreasing ↓

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Green Sea Turtle	koala
Diet	Herbivore	Herbivore
Average Lifespan	80 years	15 years
Average Length	1.2 m	75 cm
Average Weight	200.0 kg	10.0 kg

Habitat & Geographic Range

Green 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 8 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Australia, Brazil, Costa Rica, Indonesia, and Mexico. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its 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.

Green Sea Turtle

The green sea turtle is one of the largest sea turtles. They are named for the green color of their cartilage and fat, not their shells.

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.

Shared Countries

Both species can be found in 1 countries:

🇦🇺 Australia