Requin lézard vs baleine bleue

Chlamydoselachus africana compared with Balaenoptera musculus

Key Differences

• Requin lézard is Least Concern while baleine bleue is Vulnerable.

Taxonomic Classification

Rank	Requin lézard	baleine bleue
Kingdom same	Animalia (animal)	Animalia (animal)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Elasmobranchii	Mammalia (mammifères)
Order	Hexanchiformes (Hexanchiformes)	Cetacea (Whales & Dolphins)
Family	Chlamydoselachidae	Balaenopteridae (Rorquals)
Genus	Chlamydoselachus	Balaenoptera (Rorquals)
Species	Chlamydoselachus africana	Balaenoptera musculus

Evolutionary Relationship

Requin lézard and baleine bleue share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Requin lézard

LC — Least Concern

baleine bleue

VU — Vulnerable

Population: ~15.0K

Trend: Increasing ↑

Physical Characteristics

Attribute	Requin lézard	baleine bleue
Diet	—	Carnivore
Average Lifespan	—	90 years
Average Length	—	30.0 m
Average Weight	—	150.0 t

Habitat & Geographic Range

Requin lézard

baleine bleue

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

Range

Widely distributed across Asia (Taiwan), Europe (4 countries), and South America (Colombia, Ecuador). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Requin lézard

The African frilled shark (Chlamydoselachus africana) is a species in the genus Chlamydoselachus. It is currently classified as Least Concern on the IUCN Red List.

baleine bleue

The largest animal ever known to have lived on Earth, blue whales can reach 33 meters and 200 tonnes — their hearts alone weigh as much as a small car. Found in all oceans, they migrate between polar feeding grounds and tropical breeding areas. Filter feeders consuming up to 4 tonnes of krill daily. Endangered, with global populations estimated at 10,000–25,000 after near-extinction from 20th-century whaling.