Basking shark vs koala

Rhincodon typus compared with Phascolarctos cinereus

Key Differences

• Basking shark is Endangered while koala is Vulnerable.
• Basking shark is omnivore while koala is herbivore.
• Basking shark is 2000.0x heavier than koala.
• Basking shark lives longer (100 years vs 15 years).

Taxonomic Classification

Rank	Basking shark	koala
Kingdom same	Animalia (สัตว์)	Animalia (สัตว์)
Phylum same	Chordata (สัตว์มีแกนสันหลัง)	Chordata (สัตว์มีแกนสันหลัง)
Class	Chondrichthyes (ปลากระดูกอ่อน)	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)
Order	Lamniformes (อันดับปลาฉลามขาว)	Diprotodontia (Marsupials)
Family	Rhincodontidae (Whale Sharks)	Phascolarctidae (Koalas)
Genus	Rhincodon (Whale Sharks)	Phascolarctos (Koalas)
Species	Rhincodon typus	Phascolarctos cinereus

Evolutionary Relationship

Basking shark and koala share a common ancestor at the Phylum level: Chordata. (สัตว์มีแกนสันหลัง)

Conservation Status

Basking shark

EN — Endangered

Trend: Decreasing ↓

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Basking shark	koala
Diet	Omnivore	Herbivore
Average Lifespan	100 years	15 years
Average Length	12.0 m	75 cm
Average Weight	20.0 t	10.0 kg

Habitat & Geographic Range

Basking shark

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate grasslands and steppes, and montane grasslands and shrublands, among 5 distinct biome types within the Neotropic biogeographic realm.

Range

Distributed across Chile, Portugal, Taiwan, and Venezuela. 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.

Basking shark

The world's largest fish, whale sharks can exceed 12 meters and 20 tonnes, inhabiting tropical and warm temperate oceans worldwide. Despite their massive size, they are harmless filter feeders, consuming plankton, fish eggs, and small fish by swimming open-mouthed through prey-dense water. They undertake vast seasonal migrations following plankton blooms. Endangered due to fishing, boat strikes, and the live fin trade, with population declining by approximately 50% over the past 75 years.

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.